@article{Aaij:2021:10.1007/JHEP05(2021)095,
author = {Aaij, R and Abellán, Beteta C and Ackernley, T and Adeva, B and Adinolfi, M and Afsharnia, H and Aidala, CA and Aiola, S and Ajaltouni, Z and Akar, S and Albrecht, J and Alessio, F and Alexander, M and Alfonso, Albero A and Aliouche, Z and Alkhazov, G and Alvarez, Cartelle P and Amato, S and Amhis, Y and An, L and Anderlini, L and Andreianov, A and Andreotti, M and Archilli, F and Artamonov, A and Artuso, M and Arzymatov, K and Aslanides, E and Atzeni, M and Audurier, B and Bachmann, S and Bachmayer, M and Back, JJ and Baladron, Rodriguez P and Balagura, V and Baldini, W and Baptista, Leite J and Barlow, RJ and Barsuk, S and Barter, W and Bartolini, M and Baryshnikov, F and Basels, JM and Bassi, G and Batsukh, B and Battig, A and Bay, A and Becker, M and Bedeschi, F and Bediaga, I and Beiter, A and Belavin, V and Belin, S and Bellee, V and Belous, K and Belov, I and Belyaev, I and Bencivenni, G and Ben-Haim, E and Berezhnoy, A and Bernet, R and Berninghoff, D and Bernstein, HC and Bert},
doi = {10.1007/JHEP05(2021)095},
journal = {Journal of High Energy Physics},
title = {Observation of the decay Λb0 → χ<inf>c1</inf>pπ<sup>−</sup>},
url = {http://dx.doi.org/10.1007/JHEP05(2021)095},
volume = {2021},
year = {2021}
}

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TY  - JOUR
AB  - The Cabibbo-suppressed decay Λb0→ χc1pπ− is observed for the first time using data from proton-proton collisions corresponding to an integrated luminosity of 6 fb−1, collected with the LHCb detector at a centre-of-mass energy of 13 TeV. Evidence for the Λb0→ χc2pπ− decay is also found. Using the Λb0→ χc1pK− decay as normalisation channel, the ratios of branching fractions are measured to beB(Λb0→χc1pπ−)B(Λb0→χc1pK−)=(6.59±1.01±0.22)×10−2,B(Λb0→χc2pπ−)B(Λb0→χc1pπ−)=0.95±0.30±0.04±0.04,B(Λb0→χc2pK−)B(Λb0→χc1pK−)=1.06±0.05±0.04±0.04, where the first uncertainty is statistical, the second is systematic and the third is due to the uncertainties in the branching fractions of χc1,2→ J/ψγ decays. [Figure not available: see fulltext.]
AU  - Aaij,R
AU  - Abellán,Beteta C
AU  - Ackernley,T
AU  - Adeva,B
AU  - Adinolfi,M
AU  - Afsharnia,H
AU  - Aidala,CA
AU  - Aiola,S
AU  - Ajaltouni,Z
AU  - Akar,S
AU  - Albrecht,J
AU  - Alessio,F
AU  - Alexander,M
AU  - Alfonso,Albero A
AU  - Aliouche,Z
AU  - Alkhazov,G
AU  - Alvarez,Cartelle P
AU  - Amato,S
AU  - Amhis,Y
AU  - An,L
AU  - Anderlini,L
AU  - Andreianov,A
AU  - Andreotti,M
AU  - Archilli,F
AU  - Artamonov,A
AU  - Artuso,M
AU  - Arzymatov,K
AU  - Aslanides,E
AU  - Atzeni,M
AU  - Audurier,B
AU  - Bachmann,S
AU  - Bachmayer,M
AU  - Back,JJ
AU  - Baladron,Rodriguez P
AU  - Balagura,V
AU  - Baldini,W
AU  - Baptista,Leite J
AU  - Barlow,RJ
AU  - Barsuk,S
AU  - Barter,W
AU  - Bartolini,M
AU  - Baryshnikov,F
AU  - Basels,JM
AU  - Bassi,G
AU  - Batsukh,B
AU  - Battig,A
AU  - Bay,A
AU  - Becker,M
AU  - Bedeschi,F
AU  - Bediaga,I
AU  - Beiter,A
AU  - Belavin,V
AU  - Belin,S
AU  - Bellee,V
AU  - Belous,K
AU  - Belov,I
AU  - Belyaev,I
AU  - Bencivenni,G
AU  - Ben-Haim,E
AU  - Berezhnoy,A
AU  - Bernet,R
AU  - Berninghoff,D
AU  - Bernstein,HC
AU  - Bertella,C
AU  - Bertolin,A
AU  - Betancourt,C
AU  - Betti,F
AU  - Bezshyiko,I
AU  - Bhasin,S
AU  - Bhom,J
AU  - Bian,L
AU  - Bieker,MS
AU  - Bifani,S
AU  - Billoir,P
AU  - Birch,M
AU  - Bishop,FCR
AU  - Bitadze,A
AU  - Bizzeti,A
AU  - Bjørn,M
AU  - Blago,MP
AU  - Blake,T
AU  - Blanc,F
AU  - Blusk,S
AU  - Bobulska,D
AU  - Boelhauve,JA
AU  - Boente,Garcia O
AU  - Boettcher,T
AU  - Boldyrev,A
AU  - Bondar,A
AU  - Bondar,N
AU  - Borghi,S
AU  - Borisyak,M
AU  - Borsato,M
AU  - Borsuk,JT
AU  - Bouchiba,SA
AU  - Bowcock,TJV
AU  - Boyer,A
AU  - Bozzi,C
AU  - Bradley,MJ
AU  - Braun,S
DO  - 10.1007/JHEP05(2021)095
PY  - 2021///
TI  - Observation of the decay Λb0 → χ<inf>c1</inf>pπ<sup>−</sup>
T2  - Journal of High Energy Physics
UR  - http://dx.doi.org/10.1007/JHEP05(2021)095
VL  - 2021
ER  - 

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