Professor Golutvin

Aaij R, Beteta CA, Adeva B, Adinolfi M, Aidala CA, Ajaltouni Z, Akar S, Albicocco P, Albrecht J, Alessio F, Alexander M, Alfonso Albero A, Alkhazov G, Alvarez Cartelle P, Jr AAA, Amato S, Amerio S, Amhis Y, An L, Anderlini L, Andreassi G, Andreotti M, Andrews JE, Archilli F, Romeu JA, Artamonov A, Artuso M, Arzymatov K, Aslanides E, Atzeni M, Audurier B, Bachmann S, Back JJ, Baker S, Balagura V, Baldini W, Baranov A, Barlow RJ, Barsuk S, Barter W, Bartolini M, Baryshnikov F, Batozskaya V, Batsukh B, Battig A, Battista V, Bay A, Beddow J, Bedeschi F, Bediaga I, Beiter A, Bel LJ, Belin S, Beliy N, Bellee V, Belloli N, Belous K, Belyaev I, Bencivenni G, Ben-Haim E, Benson S, Beranek S, Berezhnoy A, Bernet R, Berninghoff D, Bertholet E, Bertolin A, Betancourt C, Betti F, Bettler MO, Bezshyiko I, Bhasin S, Bhom J, Bifani S, Billoir P, Birnkraut A, Bizzeti A, Bjorn M, Blago MP, Blake T, Blanc F, Blusk S, Bobulska D, Bocci V, Boente Garcia O, Boettcher T, Bondar A, Bondar N, Borghi S, Borisyak M, Borsato M, Bossu F, Boubdir M, Bowcock TJ, Bozzi C, Braun S, Brodski M, Brodzicka J, Gonzalo AB, Brundu D, Buchanan E, Buonaura A, Burr C, Bursche A, Buytaert J, Byczynski W, Cadeddu S, Cai H, Calabrese R, Calladine R, Calvi M, Calvo Gomez M, Camboni A, Campana P, Perez DHC, Capriotti L, Carbone A, Carboni G, Cardinale R, Cardini A, Carniti P, Carson L, Carvalho Akiba K, Casse G, Cassina L, Cattaneo M, Cavallero G, Cenci R, Chapman MG, Charles M, Charpentier P, Chatzikonstantinidis G, Chefdeville M, Chekalina V, Chen C, Chen S, Chitic S-G, Chobanova V, Chrzaszcz M, Chubykin A, Ciambrone P, Cid Vidal X, Ciezarek G, Cindolo F, Clarke PEL, Clemencic M, Cliff H, Closier J, Coco V, Coelho JAB, Cogan J, Cogneras E, Cojocariu L, Collins P, Colombo T, Comerma-Montells A, Contu A, Coombs G, Coquereau S, Corti G, Corvo M, Sobral CMC, Couturier B, Cowan GA, Craik DC, Crocombe A, Torres MC, Currie R, Da Cunha Marinho F, Da Silva CL, Dall'Occo E, Dalseno J, D'Ambrosio C, Danilina A, d'Argent Pet al., 2019, Search for the rare decay B+→ µ+µ−µ+νµ, European Physical Journal C: Particles and Fields, Vol: 79, ISSN: 1434-6044

A search for the rare leptonic decay B+→μ+μ−μ+νμ is performed using proton-proton collision data corresponding to an integrated luminosity of 4.7fb−1 collected by the LHCb experiment. The search is carried out in the region where the lowest of the two μ+μ− mass combinations is below 980MeV/c2 . The data are consistent with the background-only hypothesis and an upper limit of 1.6×10−8 at 95% confidence level is set on the branching fraction in the stated kinematic region.

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Aaij R, Beteta CA, Adeva B, Adinolfi M, Aidala CA, Ajaltouni Z, Akar S, Albicocco P, Albrecht J, Alessio F, Alexander M, Albero AA, Alkhazov G, Cartelle PA, Alves AA, Amato S, Amhis Y, An L, Anderlini L, Andreassi G, Andreotti M, Andrews JE, Archilli F, Romeu JA, Artamonov A, Artuso M, Arzymatov K, Aslanides E, Atzeni M, Audurier B, Bachmann S, Back JJ, Baker S, Balagura V, Baldini W, Baranov A, Barlow RJ, Barsuk S, Barter W, Bartolini M, Baryshnikov F, Batozskaya V, Batsukh B, Battig A, Battista V, Bay A, Bedeschi F, Bediaga I, Beiter A, Bel LJ, Belavin V, Belin S, Beliy N, Bellee V, Belous K, Belyaev I, Bencivenni G, Ben-Haim E, Benson S, Beranek S, Berezhnoy A, Bernet R, Berninghoff D, Bertholet E, Bertolin A, Betancourt C, Betti F, Bettler MO, Bezshyiko I, Bhasin S, Bhom J, Bieker MS, Bifani S, Billoir P, Birnkraut A, Bizzeti A, Bjorn M, Blago MP, Blake T, Blanc F, Blusk S, Bobulska D, Bocci V, Boente Garcia O, Boettcher T, Boldyrev A, Bondar A, Bondar N, Borghi S, Borisyak M, Borsato M, Boubdir M, Bowcock TJV, Bozzi C, Braun S, Brea Rodriguez A, Brodski M, Brodzicka J, Brossa Gonzalo A, Brundu D, Buchanan E, Buonaura A, Burr C, Bursche A, Butter JS, Buytaert J, Byczynski W, Cadeddu S, Cai H, Calabrese R, Cali S, Calladine R, Calvi M, Calvo Gomez M, Camboni A, Campana P, Campora Perez DH, Capriotti L, Carbone A, Carboni G, Cardinale R, Cardini A, Carniti P, Carvalho Akiba K, Casais Vidal A, Casse G, Cattaneo M, Cavallero G, Cenci R, Chapman MG, Charles M, Charpentier P, Chatzikonstantinidis G, Chefdeville M, Chekalina V, Chen C, Chen S, Chitic S-G, Chobanova V, Chrzaszcz M, Chubykin A, Ciambrone P, Cid Vidal X, Ciezarek G, Cindolo F, Clarke PEL, Clemencic M, Cliff HV, Closier J, Cobbledick JL, Coco V, Coelho JAB, Cogan J, Cogneras E, Cojocariu L, Collins P, Colombo T, Comerma-Montells A, Contu A, Cooke N, Coombs G, Coquereau S, Corti G, Costa Sobral CM, Couturier B, Cowan GA, Craik DC, Crocombe A, Cruz Torres M, Currie R, Da Silva CL, Dall'Occo E, Dalseno J D'Aet al., 2019, Measurement of CP observables in the process B-0 -> DK*0 with two- and four-body D decays, The Journal of High Energy Physics, Vol: 41, Pages: 1-30, ISSN: 1029-8479

Measurements of CP observables in B0 → DK∗0 decays are presented, where D represents a superposition of D0 and 𝐷⎯⎯⎯⎯⎯0 states. The D meson is reconstructed in the two-body final states K+π−, π+K−, K+K− and π+π−, and, for the first time, in the fourbody final states K+π−π+π−, π+K−π+π− and π+π−π+π−. The analysis uses a sample of neutral B mesons produced in proton-proton collisions, corresponding to an integrated luminosity of 1.0, 2.0 and 1.8 fb−1 collected with the LHCb detector at centre-of-mass energies of 𝑠√=7,8 and 13 TeV, respectively. First observations of the decays B0 → D(π+K−)K∗0 and B0 → D(π+π−π+π−)K∗0 are obtained. The measured observables are interpreted in terms of the CP -violating weak phase γ.

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Aaij R, Beteta CA, Adeva B, Adinolfi M, Aidala CA, Ajaltouni Z, Akar S, Albicocco P, Albrecht J, Alessio F, Alexander M, Alfonso Albero A, Alkhazov G, Cartelle PA, Alves Jr AA, Amato S, Amhis Y, An L, Anderlini L, Andreassi G, Andreotti M, Andrews JE, Archilli F, Romeu JA, Artamonov A, Artuso M, Arzymatov K, Aslanides E, Atzeni M, Audurier B, Bachmann S, Back JJ, Baker S, Balagura V, Baldini W, Baranov A, Barlow RJ, Barsuk S, Barter W, Bartolini M, Baryshnikov F, Batozskaya V, Batsukh B, Battig A, Battista V, Bay A, Bedeschi F, Bediaga I, Beiter A, Bel LJ, Belin S, Beliy N, Bellee V, Belloli N, Belous K, Belyaev I, Bencivenni G, Ben-Haim E, Benson S, Beranek S, Berezhnoy A, Bernet R, Berninghoff D, Bertholet E, Bertolin A, Betancourt C, Betti F, Bettler MO, Bezshyiko I, Bhasin S, Bhom J, Bieker MS, Bifani S, Billoir P, Birnkraut A, Bizzeti A, Bjorn M, Blago MP, Blake T, Blanc F, Blusk S, Bobulska D, Bocci V, Boente Garcia O, Boettcher T, Bondar A, Bondar N, Borghi S, Borisyak M, Borsato M, Boubdir M, Bowcock TJ, Bozzi C, Braun S, Brodski M, Brodzicka J, Gonzalo AB, Brundu D, Buchanan E, Buonaura A, Burr C, Bursche A, Butter JS, Buytaert J, Byczynski W, Cadeddu S, Cai H, Calabrese R, Cali S, Calladine R, Calvi M, Calvo Gomez M, Camboni A, Campana P, Perez DHC, Capriotti L, Carbone A, Carboni G, Cardinale R, Cardini A, Carniti P, Carvalho Akiba K, Casse G, Cattaneo M, Cavallero G, Cenci R, Chapman MG, Charles M, Charpentier P, Chatzikonstantinidis G, Chefdeville M, Chekalina V, Chen C, Chen S, Chitic S-G, Chobanova V, Chrzaszcz M, Chubykin A, Ciambrone P, Cid Vidal X, Ciezarek G, Cindolo F, Clarke PEL, Clemencic M, Cliff H, Closier J, Coco V, Coelho JAB, Cogan J, Cogneras E, Cojocariu L, Collins P, Colombo T, Comerma-Montells A, Contu A, Coombs G, Coquereau S, Corti G, Sobral CMC, Couturier B, Cowan GA, Craik DC, Crocombe A, Cruz Torres M, Currie R, Da Silva CL, Dall'Occo E, Dalseno J, D'Ambrosio C, Danilina A, d'Argent P, Davis A, Francisco ODA, De Bruyn K, De Capuaet al., 2019, Precision measurement of the Λ<i>_c</i><SUP>+</SUP>, Ξ<i>_c</i><SUP>+</SUP>, and Ξ_c<SUP>0</SUP> baryon lifetimes, Publisher: AMER PHYSICAL SOC

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• Citations: 20

Aaij R, Beteta CA, Ackernley T, Adeva B, Adinolfi M, Afsharnia H, Aidala CA, Aiola S, Ajaltouni Z, Akar S, Albicocco P, Albrecht J, Alessio F, Alexander M, Albero AA, Alkhazov G, Cartelle PA, Jr AAA, Amato S, Amhis Y, An L, Anderlini L, Andreassi G, Andreotti M, Archilli F, d'Argent P, Romeu JA, Artamonov A, Artuso M, Arzymatov K, Aslanides E, Atzeni M, Audurier B, Bachmann S, Back JJ, Baker S, Balagura V, Baldini W, Baranov A, Barlow RJ, Barsuk S, Barter W, Bartolini M, Baryshnikov F, Bassi G, Batozskaya V, Batsukh B, Battig A, Battista V, Bay A, Becker M, Bedeschi F, Bediaga I, Beiter A, Bel LJ, Belavin V, Belin S, Beliy N, Bellee V, Belous K, Belyaev I, Ben-Haim E, Bencivenni G, Benson S, Beranek S, Berezhnoy A, Bernet R, Berninghoff D, Bertholet E, Bertolin A, Betancourt C, Betti F, Bettler MO, Beuzekom MV, Bezshyiko I, Bhasin S, Bhom J, Bieker MS, Bifani S, Billoir P, Birnkraut A, Bizzeti A, Bjorn M, Blago MP, Blake T, Blanc F, Blusk S, Bobulska D, Bocci V, Garcia OB, Boettcher T, Boldyrev A, Bondar A, Bondar N, Borghi S, Borisyak M, Borsato M, Borsuk JT, Boubdir M, Bowcock TJV, Bozzi C, Braun S, Rodriguez AB, Brodski M, Brodzicka J, Gonzalo AB, Brundu D, Buchanan E, Buonaura A, Burr C, Bursche A, Butter JS, Buytaert J, Byczynski W, Cadeddu S, Cai H, Calabrese R, Cali S, Calladine R, Calvi M, Gomez MC, Camboni A, Campana P, Perez DHC, Capriotti L, Carbone A, Carboni G, Cardinale R, Cardini A, Carniti P, Akiba KC, Vidal AC, Casse G, Cattaneo M, Cavallero G, Cenci R, Cerasoli J, Chapman MG, Charles M, Charpentier P, Chatzikonstantinidis G, Chefdeville M, Chekalina V, Chen C, Chen S, Chernov A, Chitic S-G, Chobanova V, Chrzaszcz M, Chubykin A, Ciambrone P, Cicala MF, Vidal XC, Ciezarek G, Cindolo F, Clarke PEL, Clemencic M, Cliff HV, Closier J, Cobbledick JL, Coco V, Coelho JAB, Cogan J, Cogneras E, Cojocariu L, Collins P, Colombo T, Comerma-Montells A, Contu A, Cooke N, Coombs G, Coquereau S, Corti G, Sobral CMC, Couturier B, Cowan GA, Craik DC, Crocombe A, Torreet al., 2019, Updated measurement of time-dependent CP -violating observables in B⁰s→J/ψK+K− decays, European Physical Journal C: Particles and Fields, Vol: 79, ISSN: 1124-1861

The decay-time-dependent CP asymmetry in B0s→J/ψK+K− decays is measured using proton–proton collision data, corresponding to an integrated luminosity of 1.9fb−1 , collected with the LHCb detector at a centre-of-mass energy of 13TeV in 2015 and 2016. Using a sample of approximately 117 000 signal decays with an invariant K+K− mass in the vicinity of the ϕ(1020) resonance, the CP -violating phase ϕs is measured, along with the difference in decay widths of the light and heavy mass eigenstates of the B0s - B¯¯¯¯0s system, ΔΓs . The difference of the average B0s and B0 meson decay widths, Γs−Γd , is determined using in addition a sample of B0→J/ψK+π− decays. The values obtained are ϕs=−0.083±0.041±0.006rad , ΔΓs=0.077±0.008±0.003ps−1 and Γs−Γd=−0.0041±0.0024±0.0015ps−1 , where the first uncertainty is statistical and the second systematic. These are the most precise single measurements of these quantities to date and are consistent with expectations based on the Standard Model and with a previous LHCb analysis of this decay using data recorded at centre-of-mass energies 7 and 8 TeV. Finally, the results are combined with recent results from B0s→J/ψπ+π− decays obtained using the same dataset as this analysis, and with previous independent LHCb results.

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Aaij R, Beteta CA, Adeva B, Adinolfi M, Aidala CA, Ajaltouni Z, Akar S, Albicocco P, Albrecht J, Alessio F, Alexander M, Alfonso Albero A, Alkhazov G, Cartelle PA, Alves Jr AA, Amato S, Amhis Y, An L, Anderlini L, Andreassi G, Andreotti M, Andrews JE, Archilli F, Romeu JA, Artamonov A, Artuso M, Arzymatov K, Aslanides E, Atzeni M, Audurier B, Bachmann S, Back JJ, Baker S, Balagura V, Baldini W, Baranov A, Barlow RJ, Barsuk S, Barter W, Bartolini M, Baryshnikov F, Batozskaya V, Batsukh B, Battig A, Battista V, Bay A, Bedeschi F, Bediaga I, Beiter A, Bel LJ, Belin S, Beliy N, Bellee V, Belloli N, Belous K, Belyaev I, Bencivenni G, Ben-Haim E, Benson S, Beranek S, Berezhnoy A, Bernet R, Berninghoff D, Bertholet E, Bertolin A, Betancourt C, Betti F, Bettler MO, Bezshyiko I, Bhasin S, Bhom J, Bieker MS, Bifani S, Billoir P, Birnkraut A, Bizzeti A, Bjorn M, Blago MP, Blake T, Blanc F, Blusk S, Bobulska D, Bocci V, Boente Garcia O, Boettcher T, Bondar A, Bondar N, Borghi S, Borisyak M, Borsato M, Boubdir M, Bowcock TJ, Bozzi C, Braun S, Brodski M, Brodzicka J, Gonzalo AB, Brundu D, Buchanan E, Buonaura A, Burr C, Bursche A, Butter JS, Buytaert J, Byczynski W, Cadeddu S, Cai H, Calabrese R, Cali S, Calladine R, Calvi M, Calvo Gomez M, Camboni A, Campana P, Perez DHC, Capriotti L, Carbone A, Carboni G, Cardinale R, Cardini A, Carniti P, Carvalho Akiba K, Casse G, Cattaneo M, Cavallero G, Cenci R, Chapman MG, Charles M, Charpentier P, Chatzikonstantinidis G, Chefdeville M, Chekalina V, Chen C, Chen S, Chitic S-G, Chobanova V, Chrzaszcz M, Chubykin A, Ciambrone P, Cid Vidal X, Ciezarek G, Cindolo F, Clarke PEL, Clemencic M, Cliff H, Closier J, Coco V, Coelho JAB, Cogan J, Cogneras E, Cojocariu L, Collins P, Colombo T, Comerma-Montells A, Contu A, Coombs G, Coquereau S, Corti G, Sobral CMC, Couturier B, Cowan GA, Craik DC, Crocombe A, Cruz Torres M, Currie R, Da Silva CL, Dall'Occo E, Dalseno J, D'Ambrosio C, Danilina A, d'Argent P, Davis A, Francisco ODA, De Bruyn K, De Capuaet al., 2019, First Observation of the Radiative Decay Lambda(0 )(b)-> Lambda gamma, Physical Review Letters, Vol: 123, ISSN: 0031-9007

The radiative decay Λ0b→Λγ is observed for the first time using a data sample of proton-proton collisions corresponding to an integrated luminosity of 1.7  fb−1 collected by the LHCb experiment at a center-of-mass energy of 13 TeV. Its branching fraction is measured exploiting the B0→K*0γ decay as a normalization mode and is found to be B(Λ0b→Λγ)=(7.1±1.5±0.6±0.7)×10−6, where the quoted uncertainties are statistical, systematic, and systematic from external inputs, respectively. This is the first observation of a radiative decay of a beauty baryon.

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Aaij R, Abellan Beteta C, Adeva B, Adinolfi M, Aidala CA, Ajaltouni Z, Akar S, Albicocco P, Albrecht J, Alessio F, Alexander M, Albero AA, Alkhazov G, Cartelle PA, Alves AA, Amato S, Amhis Y, An L, Anderlini L, Andreassi G, Andreotti M, Andrews JE, Archilli F, Romeu JA, Artamonov A, Artuso M, Arzymatov K, Aslanides E, Atzeni M, Audurier B, Bachmann S, Back JJ, Baker S, Balagura V, Baldini W, Baranov A, Barlow RJ, Barsuk S, Barter W, Bartolini M, Baryshnikov F, Batozskaya V, Batsukh B, Battig A, Battista V, Bay A, Bedeschi F, Bediaga I, Beiter A, Bel LJ, Belin S, Beliy N, Bellee V, Belloli N, Belous K, Belyaev I, Bencivenni G, Ben-Haim E, Benson S, Beranek S, Berezhnoy A, Bernet R, Berninghoff D, Bertholet E, Bertolin A, Betancourt C, Betti F, Bettler MO, Bezshyiko I, Bhasin S, Bhom J, Bieker MS, Bifani S, Billoir P, Birnkraut A, Bizzeti A, Bjorn M, Blago MP, Blake T, Blanc F, Blusk S, Bobulska D, Bocci V, Garcia OB, Boettcher T, Bondar A, Bondar N, Borghi S, Borisyak M, Borsato M, Boubdir M, Bowcock TJV, Bozzi C, Braun S, Brodski M, Brodzicka J, Brossa Gonzalo A, Brundu D, Buchanan E, Buonaura A, Burr C, Bursche A, Buytaert J, Byczynski W, Cadeddu S, Cai H, Calabrese R, Cali S, Calladine R, Calvi M, Gomez MC, Camboni A, Campana P, Perez DHC, Capriotti L, Carbone A, Carboni G, Cardinale R, Cardini A, Carniti P, Carvalho Akiba K, Casse G, Cattaneo M, Cavallero G, Cenci R, Chapman MG, Charles M, Charpentier P, Chatzikonstantinidis G, Chefdeville M, Chekalina V, Chen C, Chen S, Chitic S-G, Chobanova V, Chrzaszcz M, Chubykin A, Ciambrone P, Vidal XC, Ciezarek G, Cindolo F, Clarke PEL, Clemencic M, Cliff HV, Closier J, Coco V, Coelho JAB, Cogan J, Cogneras E, Cojocariu L, Collins P, Colombo T, Comerma-Montells A, Contu A, Coombs G, Coquereau S, Corti G, Sobral CMC, Couturier B, Cowan GA, Craik DC, Crocombe A, Cruz Torres M, Currie R, Da Silva CL, Dall'Occo E, Dalseno J, D'Ambrosio C, Danilina A, d'Argent P, Davis A, Francisco ODA, De Bruyn K, De Capua S, De Cian M, De Miret al., 2019, Near-threshold DD spectroscopy and observation of a new charmonium state, Publisher: SPRINGER

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• Citations: 30

Aaij R, Abellan Beteta C, Adeva B, Adinolfi M, Aidala CA, Ajaltouni Z, Akar S, Albicocco P, Albrecht J, Alessio F, Alexander M, Albero AA, Alkhazov G, Cartelle PA, Alves AA, Amato S, Amhis Y, An L, Anderlini L, Andreassi G, Andreotti M, Andrews JE, Archilli F, Romeu JA, Artamonov A, Artuso M, Arzymatov K, Aslanides E, Atzeni M, Audurier B, Bachmann S, Back JJ, Baker S, Balagura V, Baldini W, Baranov A, Barlow RJ, Barsuk S, Barter W, Bartolini M, Baryshnikov F, Batozskaya V, Batsukh B, Battig A, Battista V, Bay A, Bedeschi F, Bediaga I, Beiter A, Bel LJ, Belin S, Beliy N, Bellee V, Belloli N, Belous K, Belyaev I, Bencivenni G, Ben-Haim E, Benson S, Beranek S, Berezhnoy A, Bernet R, Berninghoff D, Bertholet E, Bertolin A, Betancourt C, Betti F, Bettler MO, Bezshyiko I, Bhasin S, Bhom J, Bieker MS, Bifani S, Billoir P, Birnkraut A, Bizzeti A, Bjorn M, Blago MP, Blake T, Blanc F, Blusk S, Bobulska D, Bocci V, Garcia OB, Boettcher T, Bondar A, Bondar N, Borghi S, Borisyak M, Borsato M, Boubdir M, Bowcock TJV, Bozzi C, Braun S, Brodski M, Brodzicka J, Brossa Gonzalo A, Brundu D, Buchanan E, Buonaura A, Burr C, Bursche A, Buytaert J, Byczynski W, Cadeddu S, Cai H, Calabrese R, Cali S, Calladine R, Calvi M, Gomez MC, Camboni A, Campana P, Perez DHC, Capriotti L, Carbone A, Carboni G, Cardinale R, Cardini A, Carniti P, Carvalho Akiba K, Casse G, Cattaneo M, Cavallero G, Cenci R, Chapman MG, Charles M, Charpentier P, Chatzikonstantinidis G, Chefdeville M, Chekalina V, Chen C, Chen S, Chitic S-G, Chobanova V, Chrzaszcz M, Chubykin A, Ciambrone P, Vidal XC, Ciezarek G, Cindolo F, Clarke PEL, Clemencic M, Cliff HV, Closier J, Coco V, Coelho JAB, Cogan J, Cogneras E, Cojocariu L, Collins P, Colombo T, Comerma-Montells A, Contu A, Coombs G, Coquereau S, Corti G, Sobral CMC, Couturier B, Cowan GA, Craik DC, Crocombe A, Cruz Torres M, Currie R, Da Silva CL, Dall'Occo E, Dalseno J, D'Ambrosio C, Danilina A, d'Argent P, Davis A, Francisco ODA, De Bruyn K, De Capua S, De Cian M, De Miret al., 2019, Amplitude analysis of the B0(s)→K∗0K¯¯¯¯¯∗0 decays and measurement of the branching fraction of the B0→K∗0K¯¯¯¯¯∗0 decay, The Journal of High Energy Physics, Vol: 2019, ISSN: 1029-8479

The B0→K∗0K¯¯¯¯¯∗0 and B0s→K∗0K¯¯¯¯¯∗0 decays are studied using proton-proton collision data corresponding to an integrated luminosity of 3 fb−1. An untagged and timeintegrated amplitude analysis of B ( s) 0  → (K+π−)(K−π+) decays in two-body invariant mass regions of 150 MeV/c2 around the K∗0 mass is performed. A stronger longitudinal polarisation fraction in the B0→K∗0K¯¯¯¯¯∗0 decay, fL = 0.724 ± 0.051 (stat) ± 0.016 (syst), is observed as compared to fL = 0.240 ± 0.031 (stat) ± 0.025 (syst) in the B0s→K∗0K¯¯¯¯¯∗0 decay. The ratio of branching fractions of the two decays is measured and used to determine B(B0→K∗0K¯¯¯¯¯∗0)=(8.0±0.9(stat)±0.4(syst))×10−7 .

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Aaij R, Beteta CA, Adeva B, Adinolfi M, Aidala CA, Ajaltouni Z, Akar S, Albicocco P, Albrecht J, Alessio F, Alexander M, Albero AA, Alkhazov G, Cartelle PA, Alves AA, Amato S, Amhis Y, An L, Anderlini L, Andreassi G, Andreotti M, Andrews JE, Archilli F, Romeu JA, Artamonov A, Artuso M, Arzymatov K, Aslanides E, Atzeni M, Audurier B, Bachmann S, Back JJ, Baker S, Balagura V, Baldini W, Baranov A, Barlow RJ, Barsuk S, Barter W, Bartolini M, Baryshnikov F, Batozskaya V, Batsukh B, Battig A, Battista V, Bay A, Bedeschi F, Bediaga I, Beiter A, Bel LJ, Belin S, Beliy N, Bellee V, Belloli N, Belous K, Belyaev I, Bencivenni G, Ben-Haim E, Benson S, Beranek S, Berezhnoy A, Bernet R, Berninghoff D, Bertholet E, Bertolin A, Betancourt C, Betti F, Bettler MO, Bezshyiko I, Bhasin S, Bhom J, Bieker MS, Bifani S, Billoir P, Birnkraut A, Bizzeti A, Bjorn M, Blago MP, Blake T, Blanc F, Blusk S, Bobulska D, Bocci V, Garcia OB, Boettcher T, Bondar A, Bondar N, Borghi S, Borisyak M, Borsato M, Boubdir M, Bowcock TJV, Bozzi C, Braun S, Brodski M, Brodzicka J, Gonzalo AB, Brundu D, Buchanan E, Buonaura A, Burr C, Bursche A, Butter J, Buytaert J, Byczynski W, Cadeddu S, Cai H, Calabrese R, Cali S, Calladine R, Calvi M, Calvo Gomez M, Camboni A, Campana P, Perez DHC, Capriotti L, Carbone A, Carboni G, Cardinale R, Cardini A, Carniti P, Carvalho Akiba K, Casse G, Cattaneo M, Cavallero G, Cenci R, Chapman MG, Charles M, Charpentier P, Chatzikonstantinidis G, Chefdeville M, Chekalina V, Chen C, Chen S, Chitic S-G, Chobanova V, Chrzaszcz M, Chubykin A, Ciambrone P, Cid Vidal X, Ciezarek G, Cindolo F, Clarke PEL, Clemencic M, Cliff HV, Closier J, Coco V, Coelho JAB, Cogan J, Cogneras E, Cojocariu L, Collins P, Colombo T, Comerma-Montells A, Contu A, Coombs G, Coquereau S, Corti G, Sobral CMC, Couturier B, Cowan GA, Craik DC, Crocombe A, Cruz Torres M, Currie R, Da Silva CL, Dall'Occo E, Dalseno J, D'Ambrosio C, Danilina A, d'Argent P, Davis A, Francisco ODA, De Bruyn K, De Capua S, De Cian M Det al., 2019, Amplitude analysis of B s ⁰ → K S ⁰ K±π∓ decays, The Journal of High Energy Physics, Vol: 2019, ISSN: 1029-8479

The first untagged decay-time-integrated amplitude analysis of B s 0  → K S 0 K±π∓ decays is performed using a sample corresponding to 3.0 fb−1 of pp collision data recorded with the LHCb detector during 2011 and 2012. The data are described with an amplitude model that contains contributions from the intermediate resonances K*(892)0,+, K 2 * (1430)0,+ and K 0 * (1430)0,+, and their charge conjugates. Measurements of the branching fractions of the decay modes B s 0 → K*(892)±K∓ and B0s→K∗(---)(892)0K0(---) are in agreement with, and more precise than, previous results. The decays B s 0  → K 0 * (1430)±K∓ and B0s→K∗0(---)(1430)0K0(---) are observed for the first time, each with significance over 10 standard deviations.

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Aaij R, Beteta CA, Adeva B, Adinolfi M, Aidala CA, Ajaltouni Z, Akar S, Albicocco P, Albrecht J, Alessio F, Alexander M, Albero AA, Alkhazov G, Cartelle PA, Alves AA, Amato S, Amhis Y, An L, Anderlini L, Andreassi G, Andreotti M, Andrews JE, Archilli F, Romeu JA, Artamonov A, Artuso M, Arzymatov K, Aslanides E, Atzeni M, Audurier B, Bachmann S, Back JJ, Baker S, Balagura V, Baldini W, Baranov A, Barlow RJ, Barrand GC, Barsuk S, Barter W, Bartolini M, Baryshnikov F, Batozskaya V, Batsukh B, Battig A, Battista V, Bay A, Bedeschi F, Bediaga I, Beiter A, Bel LJ, Belin S, Beliy N, Bellee V, Belloli N, Belous K, Belyaev I, Bencivenni G, Ben-Haim E, Benson S, Beranek S, Berezhnoy A, Bernet R, Berninghoff D, Bertholet E, Bertolin A, Betancourt C, Betti F, Bettler MO, Bezshyiko I, Bhasin S, Bhom J, Bieker MS, Bifani S, Billoir P, Birnkraut A, Bizzeti A, Bjorn M, Blago MP, Blake T, Blanc F, Blusk S, Bobulska D, Bocci V, Boente Garcia O, Boettcher T, Bondar A, Bondar N, Borghi S, Borisyak M, Borsato M, Boubdir M, Bowcock TJ, Bozzi C, Braun S, Brodski M, Brodzicka J, Gonzalo AB, Brundu D, Buchanan E, Buonaura A, Burr C, Bursche A, Buytaert J, Byczynski W, Cadeddu S, Cai H, Calabrese R, Calladine R, Calvi M, Calvo Gomez M, Camboni A, Campana P, Perez DHC, Capriotti L, Carbone A, Carboni G, Cardinale R, Cardini A, Carniti P, Carvalho Akiba K, Casse G, Cattaneo M, Cavallero G, Cenci R, Chamont D, Chapman MG, Charles M, Charpentier P, Chatzikonstantinidis G, Chefdeville M, Chekalina V, Chen C, Chen S, Chitic S-G, Chobanova V, Chrzaszcz M, Chubykin A, Ciambrone P, Cid Vidal X, Ciezarek G, Cindolo F, Clarke PEL, Clemencic M, Cliff H, Closier J, Coco V, Coelho JAB, Cogan J, Cogneras E, Cojocariu L, Collins P, Colombo T, Comerma-Montells A, Contu A, Coombs G, Coquereau S, Corti G, Sobral CMC, Couturier B, Cowan GA, Craik DC, Crocombe A, Cruz Torres M, Currie R, Da Silva CL, Dall'Occo E, Dalseno J, D'Ambrosio C, Danilina A, d'Argent P, Davis A, Francisco ODA, De Bruyn K, De Capua S, Deet al., 2019, Measurement of the mass difference between neutral charm-meson eigenstates, Physical Review Letters, Vol: 122, ISSN: 0031-9007

We report a measurement of the mass difference between neutral charm-meson eigenstates using a novel approach that enhances sensitivity to this parameter. We use 2.3×106 D0→K0Sπ+π− decays reconstructed in proton-proton collisions collected by the LHCb experiment in 2011 and 2012. Allowing for CP violation in mixing and in the interference between mixing and decay, we measure the CP-averaged normalized mass difference xCP=[2.7±1.6(stat)±0.4(syst)]×10−3 and the CP-violating parameter Δx=[−0.53±0.70(stat)±0.22(syst)]×10−3. The results are consistent with CP symmetry. These determinations are the most precise from a single experiment and, combined with current world-average results, yield the first evidence that the masses of the neutral charm-meson eigenstates differ.

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Aaij R, Beteta CA, Adeva B, Adinolfi M, Aidala CA, Ajaltouni Z, Akar S, Albicocco P, Albrecht J, Alessio F, Alexander M, Alfonso Albero A, Alkhazov G, Cartelle PA, Alves AA, Amato S, Amhis Y, An L, Anderlini L, Andreassi G, Andreotti M, Andrews JE, Archilli F, d'Argent P, Romeu JA, Artamonov A, Artuso M, Arzymatov K, Aslanides E, Atzeni M, Audurier B, Bachmann S, Back JJ, Baker S, Balagura V, Baldini W, Baranov A, Barlow RJ, Barsuk S, Barter W, Bartolini M, Baryshnikov F, Batozskaya V, Batsukh B, Battig A, Battista V, Bay A, Bedeschi F, Bediaga I, Beiter A, Bel LJ, Belin S, Beliy N, Bellee V, Belloli N, Belous K, Ben-Haim E, Bencivenni G, Benson S, Beranek S, Berezhnoy A, Bernet R, Berninghoff D, Bertholet E, Bertolin A, Betancourt C, Betti F, Bettle MO, van Beuzekom M, Bezshyiko I, Bhasin S, Bhom J, Bieker MS, Bifani S, Billoir P, Birnkraut A, Bizzeti A, Bjorn M, Blago MP, Blake T, Blanc F, Blusk S, Bobulska D, Bocci V, Boente Garcia O, Boettcher T, Bondar A, Bondar N, Borghi S, Borisyak M, Borsato M, Boubdir M, Bowcock TJ, Bozzi C, Braun S, Brodski M, Brodzicka J, Gonzalo AB, Brundu D, Buchanan E, Buonaura A, Burr C, Bursche A, Buytaert J, Byczynski W, Cadeddu S, Cai H, Calabrese R, Cali S, Calladine R, Calvi M, Calvo Gomez M, Camboni A, Campana P, Perez DHC, Capriotti L, Carbone A, Carboni G, Cardinale R, Cardini A, Carniti P, Carvalho Akiba K, Casse G, Cattaneo M, Cavallero G, Cenci R, Chapman MG, Charles M, Charpentier P, Chatzikonstantinidis G, Chefdeville M, Chekalina V, Chen C, Chen S, Chitic S-G, Chobanova V, Chrzaszcz M, Chubykin A, Ciambrone P, Cid Vidal X, Ciezarek G, Cindolo F, Clarke PEL, Clemencic M, Cliff H, Closier J, Coco V, Coelho JAB, Cogan J, Cogneras E, Cojocariu L, Collins P, Colombo T, Comerma-Montells A, Contu A, Coombs G, Coquereau S, Corti G, Sobral CMC, Couturier B, Cowan GA, Craik DC, Crocombe A, Cruz Torres M, Currie R, D'Ambrosio C, Da Silva CL, Dall'Occo E, Dalseno J, Danilina A, Davis A, Francisco ODA, De Bruyn K, De Capua S, De Cianet al., 2019, Observation of an Excited <i>B_c</i><SUP>+</SUP> State, Publisher: AMER PHYSICAL SOC

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Aaij R, Beteta CA, Adeva B, Adinolfi M, Aidala CA, Ajaltouni Z, Akar S, Albicocco P, Albrecht J, Alessio F, Alexander M, Alfonso Albero A, Alkhazov G, Cartelle PA, Alves AA, Amato S, Amhis Y, Amhis Y, An L, Anderlini L, Andreassi G, Andreotti M, Andrews JE, Archilli F, d'Argent P, Romeu JA, Artamonov A, Artuso M, Arzymatov K, Aslanides E, Atzeni M, Audurier B, Bachmann S, Back JJ, Baker S, Balagura V, Baldini W, Baranov A, Barlow RJ, Barsuk S, Barter W, Bartolini M, Baryshnikov F, Batozskaya V, Batsukh B, Battig A, Battista V, Bay A, Bedeschi F, Bediaga I, Beiter A, Bel LJ, Belavin V, Belin S, Beliy N, Bellee V, Belloli N, Belous K, Belyaev I, Ben-Haim E, Bencivenni G, Benson S, Beranek S, Berezhnoy A, Bernet R, Berninghoff D, Bertholet E, Bertolin A, Betancourt C, Betti F, Bettler MO, van Beuzekom M, Bezshyiko I, Bhasin S, Bhom J, Bieker MS, Bifani S, Billoir P, Birnkraut A, Bizzeti A, Bjorn M, Blago MP, Blake T, Blanc F, Blusk S, Bobulska D, Bocci V, Boente Garcia O, Boettcher T, Bondar A, Bondar N, Borghi S, Borisyak M, Borsato M, Boubdir M, Bowcock TJV, Bozzi C, Braun S, Brea Rodriguez A, Brodski M, Brodzicka J, Gonzalo AB, Brundu D, Buchanan E, Buonaura A, Burr C, Bursche A, Butter JS, Buytaert J, Byczynski W, Cadeddu S, Cai H, Calabrese R, Cali S, Calladine R, Calvi M, Calvo Gomez M, Camboni A, Campana P, Perez DHC, Capriotti L, Carbone A, Carboni G, Cardinale R, Cardini A, Carniti P, Carvalho Akiba K, Casais Vidal A, Casse G, Cattaneo M, Cavallero G, Cenci R, Chapman MG, Charles M, Charpentier P, Chatzikonstantinidis G, Chefdeville M, Chekalina V, Chen C, Chen S, Chitic S-G, Chobanova V, Chrzaszcz M, Chubykin A, Ciambrone P, Cid Vidal X, Ciezarek G, Cindolo F, Clarke PEL, Clemencic M, Cliff HV, Closier J, Coco V, Coelho JAB, Cogan J, Cogneras E, Cojocariu L, Collins P, Colombo T, Comerma-Montells A, Contu A, Coombs G, Coquereau S, Corti G, Sobral CMC, Couturier B, Cowan GA, Craik DC, Crocombe A, Cruz Torres M, Currie R, D'Ambrosio C, Da Silva CL, Dall'Occo Eet al., 2019, Observation of a Narrow Pentaquark State, <i>P_c</i>(4312)<SUP>+</SUP>, and of the Two-Peak Structure of the <i>P_c</i>(4450)<SUP>+</SUP>, Publisher: AMER PHYSICAL SOC

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• Citations: 333

Aaij R, Beteta CA, Adeva B, Adinolfi M, Aidala CA, Ajaltouni Z, Akar S, Albicocco P, Albrecht J, Alessio F, Alexander M, Alfonso Albero A, Alkhazov G, Cartelle PA, Alves AA, Amato S, Amerio S, Amhis Y, An L, Anderlini L, Andreassi G, Andreotti M, Andrews JE, Archilli F, d'Argent P, Romeu JA, Artamonov A, Artuso M, Arzymatov K, Aslanides E, Atzeni M, Audurier B, Bachmann S, Back JJ, Baker S, Balagura V, Baldini W, Baranov A, Barlow RJ, Barrand GC, Barsuk S, Barter W, Bartolini M, Baryshnikov F, Batozskaya V, Batsukh B, Battig A, Battista V, Bay A, Beddow J, Bedeschi F, Bediaga I, Beiter A, Bel LJ, Belin S, Beliy N, Bellee V, Belloli N, Belous K, Belyaev I, Ben-Haim E, Bencivenni G, Benson S, Beranek S, Berezhnoy A, Bernet R, Berninghoff D, Bertholet E, Bertolin A, Betancourt C, Betti F, Bettler MO, van Beuzekom M, Bezshyiko I, Bhasin S, Bhom J, Bifani S, Billoir P, Birnkraut A, Bizzeti A, Bjorn M, Blago MP, Blake T, Blanc F, Blusk S, Bobulska D, Bocci V, Boente Garcia O, Boettcher T, Bondar A, Bondar N, Borghi S, Borisyak M, Borsato M, Bossu F, Boubdir M, Bowcock TJV, Bozzi C, Braun S, Brodski M, Brodzicka J, Gonzalo AB, Brundu D, Buchanan E, Buonaura A, Burr C, Bursche A, Buytaert J, Byczynski W, Cadeddu S, Cai H, Calabrese R, Calladine R, Calvi M, Calvo Gomez M, Camboni A, Campana P, Perez DHC, Capriotti L, Carbone A, Carboni G, Cardinale R, Cardini A, Carniti P, Carson L, Carvalho Akiba K, Casse G, Cassina L, Cattaneo M, Cavallero G, Cenci R, Chamont D, Chapman MG, Charles M, Charpentier P, Chatzikonstantinidis G, Chefdeville M, Chekalina V, Chen C, Chen S, Chitic S-G, Chobanova V, Chrzaszcz M, Chubykin A, Ciambrone P, Cid Vidal X, Ciezarek G, Clarke PEL, Clemencic M, Cliff HV, Closier J, Coco V, Coelho JAB, Cogan J, Cogneras E, Cojocariu L, Collins P, Colombo T, Comerma-Montells A, Contu A, Coombs G, Coquereau S, Corti G, Corvo M, Sobral CMC, Couturier B, Cowan GA, Craik DC, Crocombe A, Cruz Torres M, Currie R, D'Ambrosio C, Da Cunha Marinho F, Da Silva CL, Dall'et al., 2019, Measurement of the branching fraction and CP asymmetry in B+→ J/ψ ρ+ decays, European Physical Journal C: Particles and Fields, Vol: 79, ISSN: 1124-1861

The branching fraction and direct CP asymmetry of the decay B+ → J/ψ ρ+ are measured using protonproton collision data collected with the LHCb detector at centre-of-mass energies of 7 and 8 TeV, corresponding to atotal integrated luminosity of 3 fb−1. The following results are obtained:B(B+→ J/ψ ρ+) = (3.81+0.25 −0.24 ± 0.35) × 10−5,ACP(B+→ J/ψ ρ+) = −0.045+0.056−0.057 ± 0.008,where the first uncertainties are statistical and the second systematic. Both measurements are the most precise to date.

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Aaij R, Adeva B, Adinolfi M, Ajaltouni Z, Akar S, Albrecht J, Alessio F, Alexander M, Alfonso Albero A, Ali S, Alkhazov G, Cartelle PA, Alves AA, Amato S, Amerio S, Amhis Y, An L, Anderlini L, Andreassi G, Andreotti M, Andrews JE, Appleby RB, Archilli F, Romeu JA, Artamonov A, Artuso M, Aslanides E, Atzeni M, Auriemma G, Baalouch M, Babuschkin I, Bachmann S, Back JJ, Badalov A, Baesso C, Baker S, Balagura V, Baldini W, Baranov A, Barlow RJ, Barschel C, Barsuk S, Barter W, Baryshnikov F, Batozskaya V, Battista V, Bay A, Beaucourt L, Beddow J, Bedeschi F, Bediaga I, Beiter A, Bel LJ, Beliy N, Bellee V, Belloli N, Belous K, Belyaev I, Bencivenni G, Ben-Haim E, Benson S, Beranek S, Berezhnoy A, Bernet R, Berninghoff D, Bertholet E, Bertolin A, Betancourt C, Betti F, Bettler MO, Bezshyiko I, Bifani S, Billoir P, Birnkraut A, Bizzeti A, Bjorn M, Blake T, Blanc F, Blusk S, Bocci V, Boettcher T, Bondar A, Bondar N, Bordyuzhin I, Borghi S, Borisyak M, Borsato M, Bossu F, Boubdir M, Bowcock TJV, Bowen E, Bozzi C, Braun S, Brodzicka J, Brundu D, Buchanan E, Burr C, Bursche A, Buytaert J, Byczynski W, Cadeddu S, Cai H, Calabrese R, Calladine R, Calvi M, Gomez MC, Camboni A, Campana P, Campora Perez DH, Capriotti L, Carbone A, Carboni G, Cardinale R, Cardini A, Carniti P, Carson L, Carvalho Akiba K, Casse G, Cassina L, Cattaneo M, Cavallero G, Cenci R, Chamont D, Chapman MG, Charles M, Charpentier P, Chatzikonstantinidis G, Chefdeville M, Chen S, Cheung SF, Chitic S-G, Chobanova V, Chrzaszcz M, Chubykin A, Ciambrone P, Vidal XC, Ciezarek G, Cindolo F, Clarke PEL, Clemencic M, Cliff HV, Closier J, Coco V, Cogan J, Cogneras E, Cogoni V, Cojocariu L, Collins P, Colombo T, Comerma-Montells A, Contu A, Coombs G, Coquereau S, Corti G, Corvo M, Costa Sobral CM, Couturier B, Cowan GA, Craik DC, Crocombe A, Cruz Torres M, Currie R, Da Cunha Marinho F, Da Silva CL, Dall'Occo E, Dalseno J, D'Ambrosio C, d'Argent P, Davis A, De Aguiar Francisco O, De Bruyn K, De Capua S, De Cian M, De Miranet al., 2019, Measurement of the relative B- -> D-0/D*(0)/D**(0)mu(-)(nu)over-bar(mu) branching fractions using B- mesons from <(B)over bar >(S2)*(0) decays, Physical Review D: Particles, Fields, Gravitation and Cosmology, Vol: 99, ISSN: 1550-2368

The decay of the narrow resonance ¯B*0s2→B−K+ can be used to determine the B− momentum in partially reconstructed decays without any assumptions on the decay products of the B− meson. This technique is employed for the first time to distinguish contributions from D0, D*0, and higher-mass charmed states (D**0) in semileptonic B− decays by using the missing-mass distribution. The measurement is performed using a data sample corresponding to an integrated luminosity of 3.0  fb−1 collected with the LHCb detector in pp collisions at center-of-mass energies of 7 and 8 TeV. The resulting branching fractions relative to the inclusive B−→D0Xμ−¯νμ are fD0=B(B−→D0μ−¯νμ)/B(B−→D0Xμ−¯νμ)=0.25±0.06,fD**0=B(B−→(D**0→D0X)μ−¯νμ)/B(B−→D0Xμ−¯νμ)=0.21±0.07, with fD*0=1−fD0−fD**0 making up the remainder.

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Aaij R, Abellán Beteta C, Adeva B, Adinolfi M, Aidala CA, Ajaltouni Z, Akar S, Albicocco P, Albrecht J, Alessio F, Alexander M, Alfonso Albero A, Alkhazov G, Alvarez Cartelle P, Alves AA, Amato S, Amhis Y, An L, Anderlini L, Andreassi G, Andreotti M, Andrews JE, Archilli F, dArgent P, Arnau Romeu J, Artamonov A, Artuso M, Arzymatov K, Aslanides E, Atzeni M, Audurier B, Bachmann S, Back JJ, Baker S, Balagura V, Baldini W, Baranov A, Barlow RJ, Barsuk S, Barter W, Bartolini M, Baryshnikov F, Batozskaya V, Batsukh B, Battig A, Battista V, Bay A, Bedeschi F, Bediaga I, Beiter A, Bel LJ, Belin S, Beliy N, Bellee V, Belloli N, Belous K, Belyaev I, Ben-Haim E, Bencivenni G, Benson S, Beranek S, Berezhnoy A, Bernet R, Berninghoff D, Bertholet E, Bertolin A, Betancourt C, Betti F, Bettler MO, van Beuzekom M, Bezshyiko I, Bhasin S, Bhom J, Bieker MS, Bifani S, Billoir P, Birnkraut A, Bizzeti A, Bjørn M, Blago MP, Blake T, Blanc F, Blusk S, Bobulska D, Bocci V, Boente Garcia O, Boettcher T, Bondar A, Bondar N, Borghi S, Borisyak M, Borsato M, Boubdir M, Bowcock TJV, Bozzi C, Braun S, Brodski M, Brodzicka J, Brossa Gonzalo A, Brundu D, Buchanan E, Buonaura A, Burr C, Bursche A, Buytaert J, Byczynski W, Cadeddu S, Cai H, Calabrese R, Cali S, Calladine R, Calvi M, Calvo Gomez M, Camboni A, Campana P, Campora Perez DH, Capriotti L, Carbone A, Carboni G, Cardinale R, Cardini A, Carniti P, Carvalho Akiba K, Casse G, Cattaneo M, Cavallero G, Cenci R, Chapman MG, Charles M, Charpentier P, Chatzikonstantinidis G, Chefdeville M, Chekalina V, Chen C, Chen S, Chitic S-G, Chobanova V, Chrzaszcz M, Chubykin A, Ciambrone P, Cid Vidal X, Ciezarek G, Cindolo F, Clarke PEL, Clemencic M, Cliff HV, Closier J, Coco V, Coelho JAB, Cogan J, Cogneras E, Cojocariu L, Collins P, Colombo T, Comerma-Montells A, Contu A, Coombs G, Coquereau S, Corti G, Costa Sobral CM, Couturier B, Cowan GA, Craik DC, Crocombe A, Cruz Torres M, Currie R, DAmbrosio C, Da Silva CL, DallOcco E, Dalseno J, Danilina A, Daviet al., 2019, Observation of CP Violation in Charm Decays, Physical Review Letters, Vol: 122, Pages: 211803-1-211803-12, ISSN: 0031-9007

A search for charge-parity (CP) violation in D0→K−K+ and D0→π−π+ decays is reported, using pp collision data corresponding to an integrated luminosity of 5.9  fb−1 collected at a center-of-mass energy of 13 TeV with the LHCb detector. The flavor of the charm meson is inferred from the charge of the pion in D∗(2010)+→D0π+ decays or from the charge of the muon in ¯B→D0μ−¯νμX decays. The difference between the CP asymmetries in D0→K−K+ and D0→π−π+ decays is measured to be ΔACP=[−18.2±3.2(stat)±0.9(syst)]×10−4 for π-tagged and ΔACP=[−9±8(stat)±5(syst)]×10−4 for μ-tagged D0 mesons. Combining these with previous LHCb results leads to ΔACP=(−15.4±2.9)×10−4, where the uncertainty includes both statistical and systematic contributions. The measured value differs from zero by more than 5 standard deviations. This is the first observation of CP violation in the decay of charm hadrons.

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Aaij R, Beteta CA, Adeva B, Adinolfi M, Aidala CA, Ajaltouni Z, Akar S, Albicocco P, Albrecht J, Alessio F, Alexander M, Albero AA, Alkhazov G, Cartelle PA, Alves AA, Amato S, Amhis Y, An L, Anderlini L, Andreassi G, Andreotti M, Andrews JE, Archilli F, Romeu JA, Artamonov A, Artuso M, Arzymatov K, Aslanides E, Atzeni M, Audurier B, Bachmann S, Back JJ, Baker S, Balagura V, Baldini W, Baranov A, Barlow RJ, Barsuk S, Barter W, Bartolini M, Baryshnikov F, Batozskaya V, Batsukh B, Battig A, Battista V, Bay A, Bedeschi F, Bediaga I, Beiter A, Bel LJ, Belin S, Beliy N, Bellee V, Belloli N, Belous K, Belyaev I, Bencivenni G, Ben-Haim E, Benson S, Beranek S, Berezhnoy A, Bernet R, Berninghoff D, Bertholet E, Bertolin A, Betancourt C, Betti F, Bettler MO, Bezshyiko I, Bhasin S, Bhom J, Bieker MS, Bifani S, Billoir P, Birnkraut A, Bizzeti A, Bjorn M, Blago MP, Blake T, Blanc F, Blusk S, Bobulska D, Bocci V, Garcia OB, Boettcher T, Bondar A, Bondar N, Borghi S, Borisyak M, Borsato M, Boubdir M, Bowcock TJV, Bozzi C, Braun S, Brodski M, Brodzicka J, Gonzalo AB, Brundu D, Buchanan E, Buonaura A, Burr C, Bursche A, Butter J, Buytaert J, Byczynski W, Cadeddu S, Cai H, Calabrese R, Cali S, Calladine R, Calvi M, Calvo Gomez M, Camboni A, Campana P, Perez DHC, Capriotti L, Carbone A, Carboni G, Cardinale R, Cardini A, Carniti P, Carvalho Akiba K, Casse G, Cattaneo M, Cavallero G, Cenci R, Chapman MG, Charles M, Charpentier P, Chatzikonstantinidis G, Chefdeville M, Chekalina V, Chen C, Chen S, Chitic S-G, Chobanova V, Chrzaszcz M, Chubykin A, Ciambrone P, Cid Vidal X, Ciezarek G, Cindolo F, Clarke PEL, Clemencic M, Cliff HV, Closier J, Coco V, Coelho JAB, Cogan J, Cogneras E, Cojocariu L, Collins P, Colombo T, Comerma-Montells A, Contu A, Coombs G, Coquereau S, Corti G, Sobral CMC, Couturier B, Cowan GA, Craik DC, Crocombe A, Cruz Torres M, Currie R, Da Silva CL, Dall'Occo E, Dalseno J, D'Ambrosio C, Danilina A, d'Argent P, Davis A, Francisco ODA, De Bruyn K, De Capua S, De Cian M Det al., 2019, Search for Lepton-universality violation in B+ -> K(+)l(+)l(-) decays, Physical Review Letters, Vol: 122, Pages: 191801-1-191801-13, ISSN: 0031-9007

A measurement of the ratio of branching fractions of the decays B+→K+μ+μ− and B+→K+e+e− is presented. The proton-proton collision data used correspond to an integrated luminosity of 5.0  fb−1 recorded with the LHCb experiment at center-of-mass energies of 7, 8, and 13 TeV. For the dilepton mass-squared range 1.1<q2<6.0  GeV2/c4 the ratio of branching fractions is measured to be RK=0.846+0.060−0.054+0.016−0.014, where the first uncertainty is statistical and the second systematic. This is the most precise measurement of RK to date and is compatible with the standard model at the level of 2.5 standard deviations.

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Aaij R, Beteta CA, Adeva B, Adinolfi M, Aidala CA, Ajaltouni Z, Akar S, Albicocco P, Albrecht J, Alessio F, Alexander M, Albero AA, Alkhazov G, Cartelle PA, Alves AA, Amato S, Amhis Y, An L, Anderlini L, Andreassi G, Andreotti M, Andrews JE, Archilli F, Romeu JA, Artamonov A, Artuso M, Arzymatov K, Aslanides E, Atzeni M, Audurier B, Bachmann S, Back JJ, Baker S, Balagura V, Baldini W, Baranov A, Barlow RJ, Barsuk S, Barter W, Bartolini M, Baryshnikov F, Batozskaya V, Batsukh B, Battig A, Battista V, Bay A, Bedeschi F, Bediaga I, Beiter A, Bel LJ, Belin S, Beliy N, Bellee V, Belloli N, Belous K, Belyaev I, Bencivenni G, Ben-Haim E, Benson S, Beranek S, Berezhnoy A, Bernet R, Berninghoff D, Bertholet E, Bertolin A, Betancourt C, Betti F, Bettler MO, Bezshyiko I, Bhasin S, Bhom J, Bieker MS, Bifani S, Billoir P, Birnkraut A, Bizzeti A, Bjorn M, Blago MP, Blake T, Blanc F, Blusk S, Bobulska D, Bocci V, Garcia OB, Boettcher T, Bondar A, Bondar N, Borghi S, Borisyak M, Borsato M, Boubdir M, Bowcock TJV, Bozzi C, Braun S, Brodski M, Brodzicka J, Gonzalo AB, Brundu D, Buchanan E, Buonaura A, Burr C, Bursche A, Butter J, Buytaert J, Byczynski W, Cadeddu S, Cai H, Calabrese R, Cali S, Calladine R, Calvi M, Calvo Gomez M, Camboni A, Campana P, Perez DHC, Capriotti L, Carbone A, Carboni G, Cardinale R, Cardini A, Carniti P, Carvalho Akiba K, Casse G, Cattaneo M, Cavallero G, Cenci R, Chapman MG, Charles M, Charpentier P, Chatzikonstantinidis G, Chefdeville M, Chekalina V, Chen C, Chen S, Chitic S-G, Chobanova V, Chrzaszcz M, Chubykin A, Ciambrone P, Cid Vidal X, Ciezarek G, Cindolo F, Clarke PEL, Clemencic M, Cliff HV, Closier J, Coco V, Coelho JAB, Cogan J, Cogneras E, Cojocariu L, Collins P, Colombo T, Comerma-Montells A, Contu A, Coombs G, Coquereau S, Corti G, Sobral CMC, Couturier B, Cowan GA, Craik DC, Crocombe A, Cruz Torres M, Currie R, Da Silva CL, Dall'Occo E, Dalseno J, D'Ambrosio C, Danilina A, d'Argent P, Davis A, Francisco ODA, De Bruyn K, De Capua S, De Cian M Det al., 2019, Observation of B-(s)(0) -> J/psi p(p)over-bar decays and precision measurements of the B-(s)(0) masses, Physical Review Letters, Vol: 122, ISSN: 0031-9007

he first observation of the decays B0(s)→J/ψp¯p is reported, using proton-proton collision data corresponding to an integrated luminosity of 5.2  fb−1, collected with the LHCb detector. These decays are suppressed due to limited available phase space, as well as due to Okubo-Zweig-Iizuka or Cabibbo suppression. The measured branching fractions are B(B0→J/ψp¯p)=[4.51±0.40(stat)±0.44(syst)]×10−7, B(B0s→J/ψp¯p)=[3.58±0.19(stat)±0.39(syst)]×10−6. For the B0s meson, the result is much higher than the expected value of O(10−9). The small available phase space in these decays also allows for the most precise single measurement of both the B0 mass as 5279.74±0.30(stat)±0.10(syst)  MeV and the B0s mass as 5366.85±0.19(stat)±0.13(syst)  MeV.

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Aaij R, Beteta CA, Adeva B, Adinolfi M, Aidala CA, Ajaltouni Z, Akar S, Albicocco P, Albrecht J, Alessio F, Alexander M, Albero AA, Alkhazov G, Cartelle PA, Alves AA, Amato S, Amhis Y, An L, Anderlini L, Andreassi G, Andreotti M, Andrews JE, Archilli F, Romeu JA, Artamonov A, Artuso M, Arzymatov K, Aslanides E, Atzeni M, Audurier B, Bachmann S, Back JJ, Baker S, Balagura V, Baldini W, Baranov A, Barlow RJ, Barsuk S, Barter W, Bartolini M, Baryshnikov F, Batozskaya V, Batsukh B, Battig A, Battista V, Bay A, Bedeschi F, Bediaga I, Beiter A, Bel LJ, Belin S, Beliy N, Bellee V, Belloli N, Belous K, Belyaev I, Bencivenni G, Ben-Haim E, Benson S, Beranek S, Berezhnoy A, Bernet R, Berninghoff D, Bertholet E, Bertolin A, Betancourt C, Betti F, Bettler MO, Bezshyiko I, Bhasin S, Bhom J, Bieker MS, Bifani S, Billoir P, Birnkraut A, Bizzeti A, Bjorn M, Blago MP, Blake T, Blanc F, Blusk S, Bobulska D, Bocci V, Garcia OB, Boettcher T, Bondar A, Bondar N, Borghi S, Borisyak M, Borsato M, Boubdir M, Bowcock TJV, Bozzi C, Braun S, Brodski M, Brodzicka J, Gonzalo AB, Brundu D, Buchanan E, Buonaura A, Burr C, Bursche A, Butter J, Buytaert J, Byczynski W, Cadeddu S, Cai H, Calabrese R, Cali S, Calladine R, Calvi M, Calvo Gomez M, Camboni A, Campana P, Perez DHC, Capriotti L, Carbone A, Carboni G, Cardinale R, Cardini A, Carniti P, Carvalho Akiba K, Casse G, Cattaneo M, Cavallero G, Cenci R, Chapman MG, Charles M, Charpentier P, Chatzikonstantinidis G, Chefdeville M, Chekalina V, Chen C, Chen S, Chitic S-G, Chobanova V, Chrzaszcz M, Chubykin A, Ciambrone P, Cid Vidal X, Ciezarek G, Cindolo F, Clarke PEL, Clemencic M, Cliff HV, Closier J, Coco V, Coelho JAB, Cogan J, Cogneras E, Cojocariu L, Collins P, Colombo T, Comerma-Montells A, Contu A, Coombs G, Coquereau S, Corti G, Sobral CMC, Couturier B, Cowan GA, Craik DC, Crocombe A, Cruz Torres M, Currie R, Da Silva CL, Dall'Occo E, Dalseno J, D'Ambrosio C, Danilina A, d'Argent P, Davis A, Francisco ODA, De Bruyn K, De Capua S, De Cian M Det al., 2019, Search for CP Violation in D-s(+) -> K-S(0)pi(+), D+ -> (KSK+)-K-0, and D+ -> phi pi(+) Decays, Physical Review Letters, Vol: 122, ISSN: 0031-9007

A search for charge-parity (CP) violation in Cabibbo-suppressed D+s→K0Sπ+, D+→K0SK+, and D+→ϕπ+ decays is reported using proton-proton collision data, corresponding to an integrated luminosity of 3.8  fb−1, collected at a center-of-mass energy of 13 TeV with the LHCb detector. High-yield samples of kinematically and topologically similar Cabibbo-favored D+(s) decays are analyzed to subtract nuisance asymmetries due to production and detection effects, including those induced by CP violation in the neutral kaon system. The results are ACP(D+s→K0Sπ+)=(1.3±1.9±0.5)×10−3,ACP(D+→K0SK+)=(−0.09±0.65±0.48)×10−3,ACP(D+→ϕπ+)=(0.05±0.42±0.29)×10−3,where the first uncertainties are statistical and the second systematic. They are the most precise measurements of these quantities to date, and are consistent with CP symmetry. A combination with previous LHCb measurements, based on data collected at 7 and 8 TeV, is also reported.

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Aaij R, Adeva B, Adinolfi M, Ajaltouni Z, Akar S, Albrecht J, Alessio F, Alexander M, Alfonso Albero A, Ali S, Alkhazov G, Cartelle PA, Alves AA, Amato S, Amerio S, Amhis Y, An L, Anderlini L, Andreassi G, Andreotti M, Andrews JE, Appleby RB, Archilli F, d'Argent P, Romeu JA, Artamonov A, Artuso M, Aslanides E, Atzeni M, Auriemma G, Bachmann S, Back JJ, Baesso C, Baker S, Balagura V, Baldini W, Baranov A, Barlow RJ, Barsuk S, Barter W, Baryshnikov F, Batozskaya V, Battista V, Bay A, Beddow J, Bedeschi F, Bediaga I, Beiter A, Bel LJ, Beliy N, Bellee V, Belloli N, Belous K, Belyaev I, Ben-Haim E, Bencivenni G, Benson S, Beranek S, Berezhnoy A, Bernet R, Berninghoff D, Bertholet E, Bertolin A, Betancourt C, Betti F, Bettler MO, van Beuzekom M, Bezshyiko I, Bifani S, Billoir P, Birnkraut A, Bizzeti A, Bjorn M, Blake T, Blanc F, Blusk S, Bocci V, Boettcher T, Bondar A, Bondar N, Borghi S, Borisyak M, Borsato M, Bossu F, Boubdir M, Bowcock TJV, Bowen E, Bozzi C, Braun S, Brodski M, Brodzicka J, Brundu D, Buchanan E, Burr C, Bursche A, Buytaert J, Byczynski W, Cadeddu S, Cai H, Calabrese R, Calladine R, Calvi M, Calvo Gomez M, Camboni A, Campana P, Perez DHC, Capriotti L, Carbone A, Carboni G, Cardinale R, Cardini A, Carniti P, Carson L, Carvalho Akiba K, Casse G, Cassina L, Cattaneo M, Cavallero G, Cenci R, Chamont D, Chapman MG, Charles M, Charpentier P, Chatzikonstantinidis G, Chefdeville M, Chen S, Chitic S-G, Chobanova V, Chrzaszcz M, Chubykin A, Ciambrone P, Cid Vidal X, Ciezarek G, Clarke PEL, Clemencic M, Cliff HV, Closier J, Coco V, Cogan J, Cogneras E, Cogoni V, Cojocariu L, Collins P, Colombo T, Comerma-Montells A, Contu A, Coombs G, Coquereau S, Corti G, Corvo M, Sobral CMC, Couturier B, Cowan GA, Craik DC, Crocombe A, Cruz Torres M, Currie R, D'Ambrosio C, Da Cunha Marinho F, Da Silva CL, Dall'Occo E, Dalseno J, Davis A, Francisco ODA, De Bruyn K, De Capua S, De Cian M, De Miranda JM, De Paula L, De Serio M, De Simone P, Dean CT, Decamp D, Del Buono L, Delaneyet al., 2019, Erratum to: Measurement of Upsilon production in pp collisions at root s = 13TeV, The Journal of High Energy Physics, Vol: 2019, ISSN: 1029-8479

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Aaij R, Beteta CA, Adeva B, Adinolfi M, Aidala CA, Ajaltouni Z, Akar S, Albicocco P, Albrecht J, Alessio F, Alexander M, Albero AA, Alkhazov G, Cartelle PA, Alves AA, Amato S, Amerio S, Amhis Y, An L, Anderlini L, Andreassi G, Andreotti M, Andrews JE, Archilli F, d'Argent P, Romeu JA, Artamonov A, Artuso M, Arzymatov K, Aslanides E, Atzeni M, Audurier B, Bachmann S, Back JJ, Baker S, Balagura V, Baldini W, Baranov A, Barlow RJ, Barrand GC, Barsuk S, Barter W, Bartolini M, baryshnikov F, Batozskaya V, Batsukh B, Battig A, Battista V, Bay A, Beddow J, Bedeschi F, Bediaga I, Beiter A, Bel LJ, Belin S, Beliy N, Bellee V, Belloli N, Belous K, Belyaev I, Ben-Haim E, Bencivenni G, Benson S, Beranek S, Berezhnoy A, Bernet R, Berninghoff D, Bertholet E, Bertolin A, Betancourt C, Betti F, Bettler MO, van Beuzekom M, Bezshyiko I, Bhasin S, Bhom J, Bifani S, Billoir P, Birnkraut A, Bizzeti A, Bjorn M, Blago MP, Blake T, Blanc F, Blusk S, Bobulska D, Bocci V, Boente Garcia O, Boettcher T, Bondar A, Bondar N, Borghi S, Borisyak M, Borsato M, Bossu F, Boubdir M, Bowcock TJV, Bozzi C, Braun S, Brodski M, Brodzicka J, Gonzalo AB, Brundu D, Buchanan E, Buonaura A, Burr C, Bursche A, Buytaert J, Byczynski W, Cadeddu S, Cai H, Calabrese R, Calladine R, Calvi M, Calvo Gomez M, Camboni A, Campana P, Perez DHC, Capriotti L, Carbone A, Carboni G, Cardinale R, Cardini A, Carniti P, Carvalho Akiba K, Casse G, Cassina L, Cattaneo M, Cavallero G, Cenci R, Chamont D, Chapman MG, Charles M, Charpentier P, Chatzikonstantinidis G, Chefdeville M, Chekalina V, Chen C, Chen S, Chitic S-G, Chobanova V, Chrzaszcz M, Chubykin A, Ciambrone P, Cid Vidal X, Ciezarek G, Cindolo F, Clarke PEL, Clemencic M, Cliff HV, Closier J, Coco V, Coelho JAB, Cogan J, Cogneras E, Cojocariu L, Collins P, Colombo T, Comerma-Montells A, Contu A, Coombs G, Coquereau S, Corti G, Corvo M, Sobral CMC, Couturier B, Cowan GA, Craik DC, Crocombe A, Cruz Torres M, Currie R, D'Ambrosio C, Da Cunha Marinho F, Da Silva CL, Dall'Occo Eet al., 2019, Study of the B0 → ρ(770)°K*(892)0 decay with an amplitude analysis of B0 → (π+π−)(K+π−) decays, Journal of High Energy Physics, Vol: 2019, ISSN: 1029-8479

An amplitude analysis of B0 → (π+π−)(K+π−) decays is performed in the two-body invariant mass regions 300 < m(π+π−) < 1100 MeV/c2, accounting for the ρ0, ω, f0(500), f0(980) and f0(1370) resonances, and 750 < m(K+π−) < 1200 MeV/c2, which is dominated by the K*(892)0 meson. The analysis uses 3 fb−1 of proton-proton collision data collected by the LHCb experiment at centre-of-mass energies of 7 and 8 TeV. The CP averages and asymmetries are measured for the magnitudes and phase differences of the con- tributing amplitudes. The CP-averaged longitudinal polarisation fractions of the vector-vector modes are found to be f~0ρK∗ = 0.164 ± 0.015 ± 0.022 and f~0ωK∗ = 0.68 ± 0.17 ± 0.16, and their CP asymmetries, A0ρK∗ = −0.62 ± 0.09 ± 0.09 and A0ωK∗ = −0.13 ± 0.27 ± 0.13, where the first uncertainty is statistical and the second systematic.

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Aaij R, Abellan Beteta C, Adeva B, Adinolfi M, Aidala CA, Ajaltouni Z, Akar S, Albicocco P, Albrecht J, Alessio F, Alexander M, Alfonso Albero A, Alkhazov G, Cartelle PA, Alves AA, Amato S, Amerio S, Amhis Y, An L, Anderlini L, Andreassi G, Andreotti M, Andrews JE, Archilli F, Romeu JA, Artamonov A, Artuso M, Arzymatov K, Aslanides E, Atzeni M, Audurier B, Bachmann S, Back JJ, Baker S, Balagura V, Baldini W, Baranov A, Barlow RJ, Barsuk S, Barter W, Bartolini M, Baryshnikov F, Batozskaya V, Batsukh B, Battig A, Battista V, Bay A, Beddow J, Bedeschi F, Bediaga I, Beiter A, Bel LJ, Belin S, Beliy N, Bellee V, Belloli N, Belous K, Belyaev I, Bencivenni G, Ben-Haim E, Benson S, Beranek S, Berezhnoy A, Bernet R, Berninghoff D, Bertholet E, Bertolin A, Betancourt C, Betti F, Bettler MO, Bezshyiko I, Bhasin S, Bhom J, Bifani S, Billoir P, Birnkraut A, Bizzeti A, Bjorn M, Blago MP, Blake T, Blanc F, Blusk S, Bobulska D, Bocci V, Boente Garcia O, Boettcher T, Bondar A, Bondar N, Borghi S, Borisyak M, Borsato M, Bossu F, Boubdir M, Bowcock TJV, Bozzi C, Braun S, Brodski M, Brodzicka J, Brossa Gonzalo A, Brundu D, Buchana E, Buonaura A, Burr C, Bursche A, Buytaert J, Byczynski W, Cadeddu S, Cai H, Calabrese R, Calladine R, Calvi M, Gomez MC, Camboni A, Campana P, Campora Perez DH, Capriotti L, Carbone A, Carboni G, Cardinale R, Cardini A, Carniti P, Aarvalho Akiba K, Casse G, Cassina L, Cattaneo M, Cavallero G, Cenci R, Chapman MG, Charles M, Charpentier P, Chatzikonstantinidis G, Chefdeville M, Chekalina V, Chen C, Chen S, Chitic S-G, Chobanova V, Chrzaszcz M, Chubykin A, Ciambrone P, Vidal XC, Ciezarek G, Cindolo F, Clarke PEL, Clemencic M, Cliff HV, Closier J, Coco V, Coelho JAB, Cogan J, Cogneras E, Cojocariu L, Collins P, Colombo T, Comerma-Montells A, Contu A, Coombs G, Coquereau S, Corti G, Corvo M, Sobral CMC, Couturier B, Cowan GA, Craik DC, Crocombe A, Torres MC, Currie R, Marinho FDC, Da Silva CL, Dall'Occo E, Dalseno J, D'Ambrosio C, Danilina A, d'Argent P, Davis Aet al., 2019, Model-Independent Observation of Exotic Contributions to <i>B</i>° → <i>J</i>/ψ<i>K</i><SUP>+</SUP>π<SUP>-</SUP> Decays, Publisher: AMER PHYSICAL SOC

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• Citations: 17

Aaij R, Beteta CA, Adeva B, Adinolfi M, Aidala CA, Ajaltouni Z, Akar S, Albicocco P, Albrecht J, Alessio F, Alexander M, Alfonso Albero A, Alkhazov G, Cartelle PA, Alves AA, Amato S, Amerio S, Amhis Y, An L, Anderlini L, Andreassi G, Andreotti M, Andrews JE, Archilli F, d'Argent P, Romeu JA, Artamonov A, Artuso M, Arzymatov K, Aslanides E, Atzeni M, Audurier B, Bachmann S, Back JJ, Baker S, Balagura V, Baldini W, Baranov A, Barlow RJ, Barrand GC, Barsuk S, Barter W, Bartolini M, Baryshnikov F, Batozskaya V, Batsukh B, Battig A, Battista V, Bay A, Beddow J, Bedeschi F, Bediaga I, Beiter A, Bel LJ, Belin S, Beliy N, Bellee V, Belloli N, Belous K, Belyaev I, Ben-Haim E, Bencivenni G, Benson S, Beranek S, Berezhnoy A, Bernet R, Berninghoff D, Bertholet E, Bertolin A, Betancourt C, Betti F, Bettler MO, van Beuzekom M, Bezshyiko I, Bhasin S, Bhom J, Bifani S, Billoir P, Birnkraut A, Bizzeti A, Bjorn M, Blago MP, Blake T, Blanc F, Blusk S, Bobulska D, Bocci V, Boente Garcia O, Boettcher T, Bondar A, Bondar N, Borghi S, Borisyak M, Borsato M, Bossu F, Boubdir M, Bowcock TJV, Bozzi C, Braun S, Brodski M, Brodzicka J, Gonzalo AB, Brundu D, Buchanan E, Buonaura A, Burr C, Bursche A, Buytaert J, Byczynski W, Cadeddu S, Cai H, Calabrese R, Calladine R, Calvi M, Calvo Gomez M, Camboni A, Campana P, Perez DHC, Capriotti L, Carbone A, Carboni G, Cardinale R, Cardini A, Carniti P, Carson L, Carvalho Akiba K, Casse G, Cassina L, Cattaneo M, Cavallero G, Cenci R, Chamont D, Chapman MG, Charles M, Charpentier P, Chatzikonstantinidis G, Chefdeville M, Chekalina V, Chen C, Chen S, Chitic S-G, Chobanova V, Chrzaszcz M, Chubykin A, Ciambrone P, Cid Vidal X, Ciezarek G, Cindolo F, Clarke PEL, Clemencic M, Cliff HV, Closier J, Coco V, Coelho JAB, Cogan J, Cogneras E, Cojocariu L, Collins P, Colombo T, Comerma-Montells A, Contu A, Coombs G, Coquereau S, Corti G, Corvo M, Sobral CMC, Couturier B, Cowan GA, Craik DC, Crocombe A, Cruz Torres M, Currie R, D'Ambrosio C, Da Cunha Marinho F, Da Silvet al., 2019, Observation of the doubly Cabibbo-suppressed decay Ξ<i>_c</i><SUP>+</SUP> → <i>p</i>φ, Publisher: SPRINGER

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• Citations: 3

Aaij R, Adeva B, Adinolfi M, Aidala CA, Ajaltouni Z, Akar S, Albicocco P, Albrecht J, Alessio F, Alexander M, Alfonso Albero A, Ali S, Alkhazov G, Cartelle PA, Alves Jr AA, Amato S, Amerio S, Amhis Y, An L, Anderlini L, Andreassi G, Andreotti M, Andrews JE, Appleby RB, Archilli F, d'Argent P, Romeu JA, Artamonov A, Artuso M, Arzymatov K, Aslanides E, Atzeni M, Audurier B, Bachmann S, Back JJ, Baker S, Balagura V, Baldini W, Baranov A, Barlow RJ, Barsuk S, Barter W, Baryshnikov F, Batozskaya V, Batsukh B, Battista V, Bay A, Beddow J, Bedeschi F, Bediaga I, Beiter A, Bel LJ, Belin S, Beliy N, Bellee V, Belloli N, Belous K, Belyaev I, Ben-Haim E, Bencivenni G, Benson S, Beranek S, Berezhnoy A, Bernet R, Berninghoff D, Bertholet E, Bertolin A, Betancourt C, Betti F, Bettler MO, van Beuzekom M, Bezshyiko I, Bhasin S, Bhom J, Bifani S, Billoir P, Birnkraut A, Bizzeti A, Bjorn M, Blago MP, Blake T, Blanc F, Blusk S, Bobulska D, Bocci V, Boente Garcia O, Boettcher T, Bondar A, Bondar N, Borghi S, Borisyak M, Borsato M, Bossu F, Boubdir M, Bowcock TJ, Bozzi C, Braun S, Brodski M, Brodzicka J, Gonzalo AB, Brundu D, Buchanan E, Buonaura A, Burr C, Bursche A, Buytaert J, Byczynski W, Cadeddu S, Cai H, Calabrese R, Calladine R, Calvi M, Calvo Gomez M, Camboni A, Campana P, Perez DHC, Capriotti L, Carbone A, Carboni G, Cardinale R, Cardini A, Carniti P, Carson L, Carvalho Akiba K, Casse G, Cassina L, Cattaneo M, Cavallero G, Cenci R, Chamont D, Chapman MG, Charles M, Charpentier P, Chatzikonstantinidis G, Chefdeville M, Chekalina V, Chen C, Chen S, Chitic S-G, Chobanova V, Chrzaszcz M, Chubykin A, Ciambrone P, Cid Vidal X, Ciezarek G, Clarke PEL, Clemencic M, Cliff H, Closier J, Coco V, Coelho JAB, Cogan J, Cogneras E, Cojocariu L, Collins P, Colombo T, Comerma-Montells A, Contu A, Coombs G, Coquereau S, Corti G, Corvo M, Sobral CMC, Couturier B, Cowan GA, Craik DC, Crocombe A, Cruz Torres M, Currie R, D'Ambrosio C, Da Cunha Marinho F, Da Silva CL, Dall'Occo E, Dalseno J, Danilinet al., 2019, First Measurement of Charm Production in its Fixed-Target Configuration at the LHC, Physical Review Letters, Vol: 122, ISSN: 0031-9007

The first measurement of heavy-flavor production by the LHCb experiment in its fixed-target mode is presented. The production of J/ψ and D0 mesons is studied with beams of protons of different energies colliding with gaseous targets of helium and argon with nucleon-nucleon center-of-mass energies of √sNN=86.6 and 110.4 GeV, respectively. The J/ψ and D0 production cross sections in pHe collisions in the rapidity range [2, 4.6] are found to be σJ/ψ=652±33(stat)±42(syst)   nb/nucleon and σD0=80.8±2.4(stat)±6.3(syst)  μb/nucleon, where the first uncertainty is statistical and the second is systematic. No evidence for a substantial intrinsic charm content of the nucleon is observed in the large Bjorken-x region.

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Aaij R, Beteta CA, Adeva B, Adinolfi M, Aidala CA, Ajaltouni Z, Akar S, Albicocco P, Albrecht J, Alessio F, Alexander M, Alfonso Albero A, Alkhazov G, Cartelle PA, Alves AA, Amato S, Amerio S, Amhis Y, An L, Anderlini L, Andreassi G, Andreotti M, Andrews JE, Archilli F, d'Argent P, Romeu JA, Artamonov A, Artuso M, Arzymatov K, Aslanides E, Atzeni M, Audurier B, Bachmann S, Back JJ, Baker S, Balagura V, Baldini W, Baranov A, Barlow RJ, Barrand GC, Barsuk S, Barter W, Bartolini M, Baryshnikov F, Batozskaya V, Batsukh B, Battig A, Battista V, Bay A, Beddow J, Bedeschi F, Bediaga I, Beiter A, Bel LJ, Belin S, Beliy N, Bellee V, Belloli N, Belous K, Belyaev I, Ben-Haim E, Bencivenni G, Benson S, Beranek S, Berezhnoy A, Bernet R, Berninghoff D, Bertholet E, Bertolin A, Betancourt C, Betti F, Bettler MO, van Beuzekom M, Bezshyiko I, Bhasin S, Bhom J, Bifani S, Billoir P, Birnkraut A, Bizzeti A, Bjorn M, Blago MP, Blake T, Blanc F, Blusk S, Bobulska D, Bocci V, Boente Garcia O, Boettcher T, Bondar A, Bondar N, Borghi S, Borisyak M, Borsato M, Bossu F, Boubdir M, Bowcock TJV, Bozzi C, Braun S, Brodski M, Brodzicka J, Gonzalo AB, Brundu D, Buchanan E, Buonaura A, Burr C, Bursche A, Buytaert J, Byczynski W, Cadeddu S, Cai H, Calabrese R, Calladine R, Calvi M, Calvo Gomez M, Camboni A, Campana P, Perez DHC, Capriotti L, Carbone A, Carboni G, Cardinale R, Cardini A, Carniti P, Carson L, Carvalho Akiba K, Casse G, Cassina L, Cattaneo M, Cavallero G, Cenci R, Chamont D, Chapman MG, Charles M, Charpentier P, Chatzikonstantinidis G, Chefdeville M, Chekalina V, Chen C, Chen S, Chitic S-G, Chobanova V, Chrzaszcz M, Chubykin A, Ciambrone P, Cid Vidal X, Ciezarek G, Cindolo F, Clarke PEL, Clemencic M, Cliff HV, Closier J, Coco V, Coelho JAB, Cogan J, Cogneras E, Cojocariu L, Collins P, Colombo T, Comerma-Montells A, Contu A, Coombs G, Coquereau S, Corti G, Corvo M, Sobral CMC, Couturier B, Cowan GA, Craik DC, Crocombe A, Cruz Torres M, Currie R, D'Ambrosio C, Da Cunha Marinho F, Da Silvet al., 2019, Dalitz plot analysis of the D+ -> K-K+K+ decay, Journal of High Energy Physics, Vol: 63, Pages: 1-36, ISSN: 1029-8479

The resonant structure of the doubly Cabibbo-suppressed decay D+→K−K+K+ is studied for the first time. The measurement is based on a sample of pp-collision data, collected at a centre-of-mass energy of 8 TeV with the LHCb detector and corresponding to an integrated luminosity of 2 fb−1. The amplitude analysis of this decay is performed with the isobar model and a phenomenological model based on an effective chiral Lagrangian. In both models the S-wave component in the K−K+ system is dominant, with a small contribution of the ϕ(1020) meson and a negligible contribution from tensor resonances. The K+K− scattering amplitudes for the considered combinations of spin (0,1) and isospin (0,1) of the two-body system are obtained from the Dalitz plot fit with the phenomenological decay amplitude.

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Ahdida C, Albanese R, Alexandrov A, Anokhina A, Aoki S, Arduini G, Atkin E, Azorskiy N, Dos Santos FB, Back JJ, Bagulya A, Baranov A, Bardou F, Barker GJ, Battistin M, Bauche J, Bay A, Bayliss V, Bencivenni G, Berdnikov YA, Berdnikov AY, Berezkina I, Bertani M, Betancourt C, Bezshyiko I, Bezshyyko O, Bick D, Bieschke S, Blanco A, Boehm J, Bogomilov M, Bondarenko K, Bonivento WM, Borburgh J, Boyarsky A, Brenner R, Breton D, Brundler R, Bruschi M, Buescher V, Buonaura A, Buontempo S, Cadeddu S, Calcaterra A, Calviani M, Campanelli M, Casolino M, Charitonidis N, Chau P, Chauveau J, Chepurnov A, Chernyavskiy M, Choi K-Y, Chumakov A, Ciambrone P, Cornelis K, Cristinziani M, Crupano A, Dallavalle GM, Datwyler A, D'Ambrosio N, D'Appollonio G, Dedenko L, Dergachev P, De Carvalho Saraiva J, De Lellis G, de Magistris M, De Roeck A, De Serio M, De Simone D, Dib C, Dijkstra H, Dipinto P, Di Crescenzo A, Di Marco N, Dmitrenko V, Dmitrievskiy S, Dolmatov A, Domenici D, Donskov S, Dougherty LA, Drohan V, Dubreuil A, Ebert J, Enik T, Etenko A, Fabbri F, Fabbri L, Fabich A, Fedin O, Fedotovs F, Ferro-Luzzi M, Felici G, Filippov K, Fini RA, Fonte P, Franco C, Fraser M, Fresa R, Froeschl R, Fukuda T, Galati G, Gall J, Gatignon L, Gavrilov G, Gentile V, Goddard B, Golinka-Bezshyyko L, Golovatiuk A, Golubkov D, Golutvin A, Gorbounov P, Gorbunov S, Gorbunov D, Gorkavenko V, Gornushkin Y, Gorshenkov M, Grachev V, Grandchamp AL, Granich G, Graverini E, Grenard J-L, Grenier D, Grichine V, Gruzinskii N, Guz Y, Haefeli GJ, Hagner C, Hakobyan H, Harris IW, Hessler C, Hollnagel A, Hosseini B, Hushchyn M, Iaselli G, Iuliano A, Ivantchenko V, Jacobsson R, Jokovic D, Jonker M, Kadenko I, Kain V, Kamiscioglu C, Kershaw K, Khabibullin M, Khalikov E, Khaustov G, Khoriauli G, Khotyantsev A, Kim YG, Kim V, Kim SH, Kitagawa N, Ko J-W, Kodama K, Kolesnikov A, Kolev DI, Kolosov V, Komatsu M, Kondrateva N, Kono A, Konovalova N, Kormannshaus S, Korol I, Korol'ko I, Korzenev A, Kostyukhin V, Platia EK, Kovalet al., 2019, Sensitivity of the SHiP experiment to Heavy Neutral Leptons, Journal of High Energy Physics, Vol: 77, Pages: 1-20, ISSN: 1029-8479

Heavy Neutral Leptons (HNLs) are hypothetical particles predicted by many extensions of the Standard Model. These particles can, among other things, explain the origin of neutrino masses, generate the observed matter-antimatter asymmetry in the Universe and provide a dark matter candidate.The SHiP experiment will be able to search for HNLs produced in decays of heavy mesons and travelling distances ranging between  (50 m) and tens of kilometers before decaying. We present the sensitivity of the SHiP experiment to a number of HNL’s benchmark models and provide a way to calculate the SHiP’s sensitivity to HNLs for arbitrary patterns of flavour mixings. The corresponding tools and data files are also made publicly available.

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Aaij R, Adeva B, Adinolfi M, Ajaltouni Z, Akar S, Albrecht J, Alessio F, Alexander M, Alfonso Albero A, Ali S, Alkhazov G, Cartelle PA, Alves AA, Amato S, Amerio S, Amhis Y, An L, Anderlini L, Andreassi G, Andreotti M, Andrews JE, Appleby RB, Archilli F, Romeu JA, Artamonov A, Artuso M, Aslanides E, Atzeni M, Auriemma G, Baalouch M, Babuschkin I, Bachmann S, Back JJ, Badalov A, Baesso C, Baker S, Balagura V, Baldini W, Baranov A, Barlow RJ, Barschel C, Barsuk S, Barter W, Baryshnikov F, Batozskaya V, Battista V, Bay A, Beaucourt L, Beddow J, Bedeschi F, Bediaga I, Beiter A, Bel LJ, Beliy N, Bellee V, Belloli N, Belous K, Belyaev I, Bencivenni G, Ben-Haim E, Benson S, Beranek S, Berezhnoy A, Bernet R, Berninghoff D, Bertholet E, Bertolin A, Betancourt C, Betti F, Bettler MO, Bezshyiko I, Bifani S, Billoir P, Birnkraut A, Bizzeti A, Bjorn M, Blake T, Blanc F, Blusk S, Bocci V, Boettcher T, Bondar A, Bondar N, Bordyuzhin I, Borghi S, Borisyak M, Borsato M, Bossu F, Boubdir M, Bowcock TJV, Bowen E, Bozzi C, Braun S, Brodzicka J, Brundu D, Buchanan E, Burr C, Bursche A, Buytaert J, Byczynski W, Cadeddu S, Cai H, Calabrese R, Calladine R, Calvi M, Gomez MC, Camboni A, Campana P, Campora Perez DH, Capriotti L, Carbone A, Carboni G, Cardinale R, Cardini A, Carniti P, Carson L, Carvalho Akiba K, Casse G, Cassina L, Cattaneo M, Cavallero G, Cenci R, Chamont D, Chapman MG, Charles M, Charpentier P, Chatzikonstantinidis G, Chefdeville M, Chen S, Cheung SF, Chitic S-G, Chobanova V, Chrzaszcz M, Chubykin A, Ciambrone P, Vidal XC, Ciezarek G, Cindolo F, Clarke PEL, Clemencic M, Cliff HV, Closier J, Coco V, Cogan J, Cogneras E, Cogoni V, Cojocariu L, Collins P, Colombo T, Comerma-Montells A, Contu A, Coombs G, Coquereau S, Corti G, Corvo M, Costa Sobral CM, Couturier B, Cowan GA, Craik DC, Crocombe A, Cruz Torres M, Currie R, Da Cunha Marinho F, Da Silva CL, Dall'Occo E, Dalseno J, D'Ambrosio C, d'Argent P, Davis A, De Aguiar Francisco O, De Bruyn K, De Capua S, De Cian M, De Miranet al., 2019, Measurement of the branching fractions of the decays D+ -> K-K+K+, D+ -> pi-pi(+) K+ and D-s(+) -> pi-K+K+, The Journal of High Energy Physics, Vol: 2019, ISSN: 1029-8479

The branching fractions of the doubly Cabibbo-suppressed decays D+ → K−K+K+, D+ → π−π+K+ and D + s  → π−K+K+ are measured using the decays D+ → K−π+π+ and D + s  → K−K+π+ as normalisation channels. The measurements are performed using proton-proton collision data collected with the LHCb detector at a centre-of-mass energy of 8 TeV, corresponding to an integrated luminosity of 2.0 fb−1. The results areB(D+→K−K+K+)B(D+→K−π+π+)=(6.541±0.025±0.042)×10−4,B(D+→ π−π+K+)B(D+→K−π+π+)=(5.231±0.009±0.023)×10−3,B(D+s→ π−K+K+)B(D+s→K−K+π+),=(2.372±0.024±0.025)×10−3,where the uncertainties are statistical and systematic, respectively. These are the most precise measurements up to date.

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Aaij R, Beteta CA, Adeva B, Adinolfi M, Aidala CA, Ajaltouni Z, Akar S, Albicocco P, Albrecht J, Alessio F, Alexander M, Alfonso Albero A, Alkhazov G, Cartelle PA, Alves Jr AA, Amato S, Amerio S, Amhis Y, An L, Anderlini L, Andreassi G, Andreotti M, Andrews JE, Archilli F, Romeu JA, Artamonov A, Artuso M, Arzymatov K, Aslanides E, Atzeni M, Audurier B, Bachmann S, Back JJ, Baker S, Balagura V, Baldini W, Baranov A, Barlow RJ, Barrand GC, Barsuk S, Barter W, Bartolini M, Baryshnikov F, Batozskaya V, Batsukh B, Battig A, Battista V, Bay A, Beddow J, Bedeschi F, Bediaga I, Beiter A, Bel LJ, Belin S, Beliy N, Bellee V, Belloli N, Belous K, Belyaev I, Bencivenni G, Ben-Haim E, Benson S, Beranek S, Berezhnoy A, Bernet R, Berninghoff D, Bertholet E, Bertolin A, Betancourt C, Betti F, Bettler MO, Bezshyiko I, Bhasin S, Bhom J, Bieker MS, Bifani S, Billoir P, Birnkraut A, Bizzeti A, Bjorn M, Blago MP, Blake T, Blanc F, Blusk S, Bobulska D, Bocci V, Boente Garcia O, Boettcher T, Bondar A, Bondar N, Borghi S, Borisyak M, Borsato M, Boubdir M, Bowcock TJ, Bozzi C, Braun S, Brodski M, Brodzicka J, Gonzalo AB, Brundu D, Buchanan E, Buonaura A, Burr C, Bursche A, Buytaert J, Byczynski W, Cadeddu S, Cai H, Calabrese R, Calladine R, Calvi M, Calvo Gomez M, Camboni A, Campana P, Perez DHC, Capriotti L, Carbone A, Carboni G, Cardinale R, Cardini A, Carniti P, Carvalho Akiba K, Casse G, Cattaneo M, Cavallero G, Cenci R, Chamont D, Chapman MG, Charles M, Charpentier P, Chatzikonstantinidis G, Chefdeville M, Chekalina V, Chen C, Chen S, Chitic S-G, Chobanova V, Chrzaszcz M, Chubykin A, Ciambrone P, Cid Vidal X, Ciezarek G, Cindolo F, Clarke PEL, Clemencic M, Cliff H, Closier J, Coco V, Coelho JAB, Cogan J, Cogneras E, Cojocariu L, Collins P, Colombo T, Comerma-Montells A, Contu A, Coombs G, Coquereau S, Corti G, Corvo M, Sobral CMC, Couturier B, Cowan GA, Craik DC, Crocombe A, Cruz Torres M, Currie R, Da Cunha Marinho F, Da Silva CL, Dall'Occo E, Dalseno J, D'Ambrosio C, Danilina A, d'Aret al., 2019, Measurement of <i>B</i><SUP>+</SUP>, <i>B</i><SUP>0</SUP> and Λ<i>_b</i><SUP>0</SUP> production in <i>p</i>Pb collisions at, √<i><SUP>s</SUP></i>NN=8.16 TeV, Publisher: AMER PHYSICAL SOC

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• Citations: 21

Ahdida C, Albanese R, Alexandrov A, Anokhina A, Aoki S, Arduini G, Atkin E, Azorskiy N, Back JJ, Bagulya A, Dos Santos FB, Baranov A, Bardou F, Barker GJ, Battistin M, Bauche J, Bay A, Bayliss V, Bencivenni G, Berdnikov AY, Berdnikov YA, Berezkina I, Bertani M, Betancourt C, Bezshyiko I, Bezshyyko O, Bick D, Bieschke S, Blanco A, Boehm J, Bogomilov M, Bondarenko K, Bonivento WM, Borburgh J, Boyarsky A, Brenner R, Breton D, Brundler R, Bruschi M, Buescher V, Buonaura A, Buontempo S, Cadeddu S, Calcaterra A, Calviani M, Campanelli M, Casolino M, Charitonidis N, Chau P, Chauveau J, Chepurnov A, Chernyavskiy M, Choi K-Y, Chumakov A, Ciambrone P, Cornelis K, Cristinziani M, Crupano A, Dallavalle GM, Datwyler A, D'Ambrosio N, D'Appollonio G, De Carvalho Saraiva J, De Lellis G, de Magistris M, De Roeck A, De Serio M, De Simone D, Dedenko L, Dergachev P, Di Crescenzo A, Di Marco N, Dib C, Dijkstra H, Dipinto P, Dmitrenko V, Dmitrievskiy S, Dougherty LA, Dolmatov A, Domenici D, Donskov S, Drohan V, Dubreuil A, Ebert J, Enik T, Etenko A, Fabbri F, Fabbri L, Fabich A, Fedin O, Fedotovs F, Felici G, Ferro-Luzzi M, Filippov K, Fini RA, Fonte P, Franco C, Fraser M, Fresa R, Froeschl R, Fukuda T, Galati G, Gall J, Gatignon L, Gavrilov G, Gentile V, Goddard B, Golinka-Bezshyyko L, Golovatiuk A, Golubkov D, Golutvin A, Gorbounov P, Gorbunov D, Gorbunov S, Gorkavenko V, Gornushkin Y, Gorshenkov M, Grachev V, Grandchamp AL, Granich G, Graverini E, Grenard J-L, Grenier D, Grichine V, Gruzinskii N, Guler AM, Guz Y, Haefeli GJ, Hagner C, Hakobyan H, Harris IW, van Herwijnen E, Hessler C, Hollnagel A, Hosseini B, Hushchyn M, Iaselli G, Iuliano A, Ivantchenko V, Jacobsson R, Jokovic D, Jonker M, Kadenko I, Kain V, Kamiscioglu C, Kershaw K, Khabibullin M, Khalikov E, Khaustov G, Khoriauli G, Khotyantsev A, Kim SH, Kim YG, Kim V, Kitagawa N, Ko J-W, Kodama K, Kolesnikov A, Kolev D, Kolosov V, Komatsu M, Kondrateva N, Kono A, Konovalova N, Kormannshaus S, Korol I, Korol'ko I, Korzenev A, Kostet al., 2019, The experimental facility for the Search for Hidden Particles at the CERN SPS, Journal of Instrumentation, Vol: 14, ISSN: 1748-0221

The International School for Advanced Studies (SISSA) logoThe International School for Advanced Studies (SISSA) logoThe following article is OPEN ACCESSThe experimental facility for the Search for Hidden Particles at the CERN SPSC. Ahdida44, R. Albanese14,a, A. Alexandrov14, A. Anokhina39, S. Aoki18, G. Arduini44, E. Atkin38, N. Azorskiy29, J.J. Back54, A. Bagulya32Show full author listPublished 25 March 2019 • © 2019 CERNJournal of Instrumentation, Volume 14, March 2019Download Article PDFReferencesDownload PDF543 Total downloads77 total citations on Dimensions.Article has an altmetric score of 1Turn on MathJaxShare this article Share this content via email Share on Facebook Share on Twitter Share on Google+ Share on MendeleyArticle informationAbstractThe Search for Hidden Particles (SHiP) Collaboration has shown that the CERN SPS accelerator with its 400 GeV/c proton beam offers a unique opportunity to explore the Hidden Sector [1–3]. The proposed experiment is an intensity frontier experiment which is capable of searching for hidden particles through both visible decays and through scattering signatures from recoil of electrons or nuclei. The high-intensity experimental facility developed by the SHiP Collaboration is based on a number of key features and developments which provide the possibility of probing a large part of the parameter space for a wide range of models with light long-lived super-weakly interacting particles with masses up to Script O(10) GeV/c2 in an environment of extremely clean background conditions. This paper describes the proposal for the experimental facility together with the most important feasibility studies. The paper focuses on the challenging new ideas behind the beam extraction and beam delivery, the proton beam dump, and the suppression of beam-induced background.

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Aaij R, Adeva B, Adinolfi M, Ajaltouni Z, Akar S, Albrecht J, Alessio F, Alexander M, Alfonso Albero A, Ali S, Alkhazov G, Cartelle PA, Alves AA, Amato S, Amerio S, Amhis Y, An L, Anderlini L, Andreassi G, Andreotti M, Andrews JE, Appleby RB, Archilli F, Romeu JA, Artamonov A, Artuso M, Aslanides E, Atzeni M, Auriemma G, Baalouch M, Babuschkin I, Bachmann S, Back JJ, Badalov A, Baesso C, Baker S, Balagura V, Baldini W, Baranov A, Barlow RJ, Barschel C, Barsuk S, Barter W, Baryshnikov F, Batozskaya V, Battista V, Bay A, Beaucourt L, Beddow J, Bedeschi F, Bediaga I, Beiter A, Bel LJ, Beliy N, Bellee V, Belloli N, Belous K, Belyaev I, Bencivenni G, Ben-Haim E, Benson S, Beranek S, Berezhnoy A, Bernet R, Berninghoff D, Bertholet E, Bertolin A, Betancourt C, Betti F, Bettler MO, Bezshyiko I, Bifani S, Billoir P, Birnkraut A, Bizzeti A, Bjorn M, Blake T, Blanc F, Blusk S, Bocci V, Boettcher T, Bondar A, Bondar N, Bordyuzhin I, Borghi S, Borisyak M, Borsato M, Bossu F, Boubdir M, Bowcock TJV, Bowen E, Bozzi C, Braun S, Brodzicka J, Brundu D, Buchanan E, Burr C, Bursche A, Buytaert J, Byczynski W, Cadeddu S, Cai H, Calabrese R, Calladine R, Calvi M, Gomez MC, Camboni A, Campana P, Campora Perez DH, Capriotti L, Carbone A, Carboni G, Cardinale R, Cardini A, Carniti P, Carson L, Carvalho Akiba K, Casse G, Cassina L, Cattaneo M, Cavallero G, Cenci R, Chamont D, Chapman MG, Charles M, Charpentier P, Chatzikonstantinidis G, Chefdeville M, Chen S, Cheung SF, Chitic S-G, Chobanova V, Chrzaszcz M, Chubykin A, Ciambrone P, Vidal XC, Ciezarek G, Cindolo F, Clarke PEL, Clemencic M, Cliff HV, Closier J, Coco V, Cogan J, Cogneras E, Cogoni V, Cojocariu L, Collins P, Colombo T, Comerma-Montells A, Contu A, Coombs G, Coquereau S, Corti G, Corvo M, Costa Sobral CM, Couturier B, Cowan GA, Craik DC, Crocombe A, Cruz Torres M, Currie R, Da Cunha Marinho F, Da Silva CL, Dall'Occo E, Dalseno J, D'Ambrosio C, d'Argent P, Davis A, De Aguiar Francisco O, De Bruyn K, De Capua S, De Cian M, De Miranet al., 2019, Measurement of the ratio of branching fractions of the decays Λ b 0  → ψ(2S)Λ and Λ b 0  → J/ψΛ, Journal of High Energy Physics, Vol: 2019, ISSN: 1029-8479

Using pp collisions corresponding to 3 fb−1 integrated luminosity, recorded by the LHCb experiment at centre-of-mass energies of 7 and 8 TeV, the ratio of branching fractionsB(Λ0b→ψ(2S)Λ)/B(Λ0b→J/ψΛ)=0.513±0.023(stat)±0.016(syst)±0.011(B)is determined. The first uncertainty is statistical, the second is systematic and the third is due to the external branching fractions used.

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Aaij R, Beteta CA, Adeva B, Adinolfi M, Aidala CA, Ajaltouni Z, Akar S, Albicocco P, Albrecht J, Alessio F, Alexander M, Alfonso Albero A, Alkhazov G, Cartelle PA, Alves Jr AA, Amato S, Amerio S, Amhis Y, An L, Anderlini L, Andreassi G, Andreotti M, Andrews JE, Archilli F, d'Argent P, Romeu JA, Artamonov A, Artuso M, Arzymatov K, Aslanides E, Atzeni M, Audurier B, Bachmann S, Back JJ, Baker S, Balagura V, Baldini W, Baranov A, Barlow RJ, Barrand GC, Barsuk S, Barter W, Bartolini M, Baryshnikov F, Batozskaya V, Batsukh B, Battig A, Battista V, Bay A, Beddow J, Bedeschi F, Bediaga I, Beiter A, Bel LJ, Belin S, Beliy N, Bellee V, Belloli N, Belous K, Belyaev I, Ben-Haim E, Bencivenni G, Benson S, Beranek S, Berezhnoy A, Bernet R, Berninghoff D, Bertholet E, Bertolin A, Betancourt C, Betti F, Bettler MO, van Beuzekom M, Bezshyiko I, Bhasin S, Bhom J, Bieker MS, Bifani S, Billoir P, Birnkraut A, Bizzeti A, Bjorn M, Blago MP, Blake T, Blanc F, Blusk S, Bobulska D, Bocci V, Boente Garcia O, Boettcher T, Bondar A, Bondar N, Borghi S, Borisyak M, Borsato M, Boubdir M, Bowcock TJ, Bozzi C, Braun S, Brodski M, Brodzicka J, Gonzalo AB, Brundu D, Buchanan E, Buonaura A, Burr C, Bursche A, Buytaert J, Byczynski W, Cadeddu S, Cai H, Calabrese R, Calladine R, Calvi M, Calvo Gomez M, Camboni A, Campana P, Perez DHC, Capriotti L, Carbone A, Carboni G, Cardinale R, Cardini A, Carniti P, Carvalho Akiba K, Casse G, Cattaneo M, Cavallero G, Cenci R, Chamont D, Chapman MG, Charles M, Charpentier P, Chatzikonstantinidis G, Chefdeville M, Chekalina V, Chen C, Chen S, Chitic S-G, Chobanova V, Chrzaszcz M, Chubykin A, Ciambrone P, Cid Vidal X, Ciezarek G, Cindolo F, Clarke PEL, Clemencic M, Cliff H, Closier J, Coco V, Coelho JAB, Cogan J, Cogneras E, Cojocariu L, Collins P, Colombo T, Comerma-Montells A, Contu A, Coombs G, Coquereau S, Corti G, Corvo M, Sobral CMC, Couturier B, Cowan GA, Craik DC, Crocombe A, Cruz Torres M, Currie R, D'Ambrosio C, Da Cunha Marinho F, Da Silva CL, Dall'Occo Eet al., 2019, Measurement of the mass and production rate of Ξ<i>_b</i><SUP>-</SUP>baryons, Publisher: AMER PHYSICAL SOC

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• Citations: 17

Aaij R, Abellán Beteta C, Adeva B, Adinolfi M, Aidala CA, Ajaltouni Z, Akar S, Albicocco P, Albrecht J, Alessio F, Alexander M, Alfonso Albero A, Alkhazov G, Alvarez Cartelle P, Alves AA, Amato S, Amerio S, Amhis Y, An L, Anderlini L, Andreassi G, Andreotti M, Andrews JE, Archilli F, Arnau Romeu J, Artamonov A, Artuso M, Arzymatov K, Aslanides E, Atzeni M, Audurier B, Bachmann S, Back JJ, Baker S, Balagura V, Baldini W, Baranov A, Barlow RJ, Barrand GC, Barsuk S, Barter W, Bartolini M, Baryshnikov F, Batozskaya V, Batsukh B, Battig A, Battista V, Bay A, Beddow J, Bedeschi F, Bediaga I, Beiter A, Bel LJ, Belin S, Beliy N, Bellee V, Belloli N, Belous K, Belyaev I, Bencivenni G, Ben-Haim E, Benson S, Beranek S, Berezhnoy A, Bernet R, Berninghoff D, Bertholet E, Bertolin A, Betancourt C, Betti F, Bettler MO, Bezshyiko I, Bhasin S, Bhom J, Bifani S, Billoir P, Birnkraut A, Bizzeti A, Bjørn M, Blago MP, Blake T, Blanc F, Blusk S, Bobulska D, Bocci V, Boente Garcia O, Boettcher T, Bondar A, Bondar N, Borghi S, Borisyak M, Borsato M, Bossu F, Boubdir Met al., 2019, Search for CP violation through an amplitude analysis of D-0 K+K-+- decays, Journal of High Energy Physics, Vol: 2019, ISSN: 1029-8479

A search for CP violation in the Cabibbo-suppressed D 0 → K + K − π + π − decay mode is performed using an amplitude analysis. The measurement uses a sample of pp collisions recorded by the LHCb experiment during 2011 and 2012, corresponding to an integrated luminosity of 3.0 fb −1 . The D 0 mesons are reconstructed from semileptonic b-hadron decays into D 0 μ − X final states. The selected sample contains more than 160 000 signal decays, allowing the most precise amplitude modelling of this D 0 decay to date. The obtained amplitude model is used to perform the search for CP violation. The result is compatible with CP symmetry, with a sensitivity ranging from 1% to 15% depending on the amplitude considered.[Figure not available: see fulltext.]

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