Publications
862 results found
Aaij R, Abdelmotteleb ASW, Beteta CA, et al., 2022, Angular Analysis of D0 →<i> x plus x-μ plus μ-</i> and D0 → K<i> plus K-μ plus μ-</i> Decays and Search for<i> CP</i> Violation, PHYSICAL REVIEW LETTERS, Vol: 128, ISSN: 0031-9007
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- Citations: 3
Ahdida C, Akmete A, Albanese R, et al., 2022, The SHiP experiment at the proposed CERN SPS Beam Dump Facility, EUROPEAN PHYSICAL JOURNAL C, Vol: 82, ISSN: 1434-6044
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- Citations: 9
Aaij R, Abdelmotteleb ASW, Beteta CA, et al., 2022, Measurement of the charm mixing parameter <i>y<sub>CP</sub></i>-<i>y<sub>CP</sub></i><SUP><i>K</i>π</SUP> using two-body <i>D</i><SUP>0</SUP> meson decays, PHYSICAL REVIEW D, Vol: 105, ISSN: 2470-0010
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- Citations: 2
Aaij R, Abdelmotteleb ASW, Beteta CA, et al., 2022, Observation of the Decay Λ<i><sub>b</sub></i><SUP>0</SUP> → Λ<i><sub>c</sub></i><SUP>+</SUP> τ<SUP>-</SUP>(ν)over-bar<sub>τ</sub>, PHYSICAL REVIEW LETTERS, Vol: 128, ISSN: 0031-9007
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- Citations: 12
Aaij R, Abdelmotteleb ASW, Beteta CA, et al., 2022, Observation of the Decay Λ_{b}^{0}→Λ_{c}^{+}τ^{-}ν[over ¯]_{τ}., Phys Rev Lett, Vol: 128
The first observation of the semileptonic b-baryon decay Λ_{b}^{0}→Λ_{c}^{+}τ^{-}ν[over ¯]_{τ}, with a significance of 6.1σ, is reported using a data sample corresponding to 3 fb^{-1} of integrated luminosity, collected by the LHCb experiment at center-of-mass energies of 7 and 8 TeV at the LHC. The τ^{-} lepton is reconstructed in the hadronic decay to three charged pions. The ratio K=B(Λ_{b}^{0}→Λ_{c}^{+}τ^{-}ν[over ¯]_{τ})/B(Λ_{b}^{0}→Λ_{c}^{+}π^{-}π^{+}π^{-}) is measured to be 2.46±0.27±0.40, where the first uncertainty is statistical and the second systematic. The branching fraction B(Λ_{b}^{0}→Λ_{c}^{+}τ^{-}ν[over ¯]_{τ})=(1.50±0.16±0.25±0.23)% is obtained, where the third uncertainty is from the external branching fraction of the normalization channel Λ_{b}^{0}→Λ_{c}^{+}π^{-}π^{+}π^{-}. The ratio of semileptonic branching fractions R(Λ_{c}^{+})≡B(Λ_{b}^{0}→Λ_{c}^{+}τ^{-}ν[over ¯]_{τ})/B(Λ_{b}^{0}→Λ_{c}^{+}μ^{-}ν[over ¯]_{μ}) is derived to be 0.242±0.026±0.040±0.059, where the external branching fraction uncertainty from the channel Λ_{b}^{0}→Λ_{c}^{+}μ^{-}ν[over ¯]_{μ} contributes to the last term. This result is in agreement with the standard model prediction.
Aaij R, Abdelmotteleb ASW, Beteta CA, et al., 2022, Tests of Lepton Universality Using <i>B</i><SUP>0</SUP> → <i>K<sub>S</sub></i><SUP>0</SUP><i>l</i><SUP>+</SUP> <i>l</i><SUP>-</SUP> and <i>B</i><SUP>+</SUP> → <i>K</i>*<SUP>+</SUP><i>l</i><SUP>+</SUP><i>l</i><SUP>-</SUP> Decays, PHYSICAL REVIEW LETTERS, Vol: 128, ISSN: 0031-9007
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- Citations: 32
Aaij R, Abdelmotteleb ASW, Abellan Beteta C, et al., 2022, Search for the decay <i>B</i><SUP>0</SUP> → φμ<SUP>+</SUP> μ<SUP>-</SUP>, JOURNAL OF HIGH ENERGY PHYSICS, ISSN: 1029-8479
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- Citations: 2
Aaij R, Abdelmotteleb ASW, Abellan Beteta C, et al., 2022, Observation of the doubly charmed baryon decay Ξ<i><sub>cc</sub></i><SUP>++</SUP> → Ξ<sub><i>c</i></sub>′<SUP>+</SUP>π<SUP>+</SUP>, JOURNAL OF HIGH ENERGY PHYSICS, ISSN: 1029-8479
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- Citations: 10
Aaij R, Ackernley T, Adeva B, et al., 2022, Centrality determination in heavy-ion collisions with the LHCb detector, JOURNAL OF INSTRUMENTATION, Vol: 17, ISSN: 1748-0221
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- Citations: 2
Aaij R, Abdelmotteleb ASW, Beteta CA, et al., 2022, Search for massive long-lived particles decaying semileptonically at √<i>s</i>=13 TeV, EUROPEAN PHYSICAL JOURNAL C, Vol: 82, ISSN: 1434-6044
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- Citations: 1
Aaij R, Abdelmotteleb ASW, Beteta CA, et al., 2022, Observation of Two New Excited ?<SUP>0</SUP><sub>b</sub> States Decaying to ?<SUP>0</SUP><sub>b</sub>K -?<SUP>+</SUP>, PHYSICAL REVIEW LETTERS, Vol: 128, ISSN: 0031-9007
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- Citations: 5
Aaij R, Abdelmotteleb ASW, Beteta CA, et al., 2022, Observation of the <i>B</i><SUP>0</SUP> → (<i>D</i>)over-bar*<SUP>0</SUP><i>K</i><SUP>+</SUP> π<SUP>-</SUP> and <i>B</i><sub>s</sub><SUP>0</SUP> → (<i>D</i>)over-bar*<SUP>0</SUP><i>K</i><SUP>-</SUP>π<SUP>+</SUP> decays, PHYSICAL REVIEW D, Vol: 105, ISSN: 2470-0010
Aaij R, Abdelmotteleb ASW, Beteta CA, et al., 2022, Study of charmonium and charmonium-like contributions in B<SUP>+</SUP> → J/ψηK<SUP>+</SUP> decays, JOURNAL OF HIGH ENERGY PHYSICS, ISSN: 1029-8479
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- Citations: 1
Aaij R, Beteta CA, Ackernley T, et al., 2022, Measurement of the Nuclear Modification Factor and Prompt Charged Particle Production in <i>p</i>-Pb and <i>pp</i> Collisions at √<i>s</i><sub><i>NN</i> </sub>=5 TeV, PHYSICAL REVIEW LETTERS, Vol: 128, ISSN: 0031-9007
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- Citations: 6
Aaij R, Abdelmotteleb ASW, Abellán Beteta C, et al., 2022, Observation of the B0 → D ¯ ∗0K+π- and Bs0 → D ¯ ∗0K-π+ decays, Physical Review D, Vol: 105, ISSN: 2470-0010
The first observations of B0→D¯∗(2007)0K+π- and Bs0→D¯∗(2007)0K-π+ decays are presented, and their branching fractions relative to that of the B0→D¯∗(2007)0π+π- decay are reported. These modes can potentially be used to investigate the spectroscopy of charm and charm-strange resonances and to determine the angle γ of the Cabibbo-Kobayashi-Maskawa unitarity triangle. It is also important to understand them as a source of potential background in determinations of γ from B+→DK+ and B0→DK+π- decays. The analysis is based on a sample corresponding to an integrated luminosity of 5.4 fb-1 of proton-proton collision data at 13 TeV center-of-mass energy recorded with the LHCb detector. The D¯∗(2007)0 mesons are fully reconstructed in the D¯0π0 and D¯0γ channels with the D¯0→K+π- decay. A novel weighting method is used to subtract background while simultaneously applying an event-by-event efficiency correction to account for resonant structures in the decays.
Aaij R, Abdelmotteleb ASW, Beteta CA, et al., 2022, Measurement of the photon polarization in Λ<sub><i>b</i></sub><SUP>0</SUP> → Λγ decays, PHYSICAL REVIEW D, Vol: 105, ISSN: 2470-0010
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- Citations: 3
Aaij R, Abdelmotteleb ASW, Beteta CA, et al., 2022, Observation of Λ<i><sub>b</sub></i><SUP>0</SUP> → <i>D</i><SUP>+</SUP><i>p</i>π<SUP>-</SUP>π<SUP>-</SUP> and Λ<i><sub>b</sub></i><SUP>0</SUP> → <i>D</i><sub>*</sub>+<i>p</i>π<SUP>-</SUP>π<SUP>-</SUP> decays, JOURNAL OF HIGH ENERGY PHYSICS, ISSN: 1029-8479
Aaij R, Abdelmotteleb ASW, Abellán Beteta C, et al., 2022, Measurement of the photon polarization in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msubsup><mml:mi mathvariant="normal">Λ</mml:mi><mml:mi>b</mml:mi><mml:mn>0</mml:mn></mml:msubsup><mml:mo stretchy="false">→</mml:mo><mml:mi mathvariant="normal">Λ</mml:mi><mml:mi>γ</mml:mi></mml:math> decays, Physical Review D, Vol: 105, ISSN: 2470-0010
Aaij R, Abdelmotteleb ASW, Beteta CA, et al., 2022, Searches for rare <i>B<sub>s</sub></i><SUP>0</SUP> and <i>B</i><SUP>0</SUP> decays into four muons, JOURNAL OF HIGH ENERGY PHYSICS, ISSN: 1029-8479
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- Citations: 5
Aaij R, Abdelmotteleb ASW, Beteta CA, et al., 2022, Measurement of the lifetimes of promptly produced Ω<i><sub>c</sub></i><SUP>0</SUP> and Ξ<i><sub>c</sub></i><SUP>9</SUP> baryons, SCIENCE BULLETIN, Vol: 67, Pages: 479-487, ISSN: 2095-9273
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- Citations: 11
Aaij R, Beteta CA, Ackernley T, et al., 2022, <i>J</i>/ψ photoproduction in Pb-Pb peripheral collisions at √<i>S<sub>NN</sub></i>=5 TeV, PHYSICAL REVIEW C, Vol: 105, ISSN: 2469-9985
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- Citations: 5
Ahdida C, Akmete A, Albanese R, et al., 2022, Track reconstruction and matching between emulsion and silicon pixel detectors for the SHiP-charm experiment, JOURNAL OF INSTRUMENTATION, Vol: 17, ISSN: 1748-0221
Aaij R, Beteta CA, Ackernley T, et al., 2022, Test of lepton universality in beauty-quark decays, NATURE PHYSICS, Vol: 18, Pages: 277-+, ISSN: 1745-2473
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- Citations: 78
Aaij R, Abdelmotteleb ASW, Beteta CA, et al., 2022, Study of Z Bosons Produced in Association with Charm in the Forward Region, PHYSICAL REVIEW LETTERS, Vol: 128, ISSN: 0031-9007
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- Citations: 6
Aaij R, ABdelmotteleb ASW, Beteta CA, et al., 2022, Evidence for a New Structure in the <i>J/</i>ψ<i>p</i> and <i>J/</i>ψ(<i>p</i>)over-bar Systems in <i>B<sub>s</sub></i><SUP>0</SUP> → <i>J/</i>ψ<i>p</i>(<i>p</i>)over-bar Decays, PHYSICAL REVIEW LETTERS, Vol: 128, ISSN: 0031-9007
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- Citations: 23
Aaij R, Abdelmotteleb ASW, Gallego FJA, et al., 2022, Identification of charm jets at LHCb, JOURNAL OF INSTRUMENTATION, Vol: 17, ISSN: 1748-0221
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- Citations: 2
Aaij R, Beteta CA, Ackernley T, et al., 2022, Measurement of prompt charged-particle production in pp collisions at √s=13 TeV, JOURNAL OF HIGH ENERGY PHYSICS, ISSN: 1029-8479
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- Citations: 8
Aaij R, Beteta CA, Ackernley T, et al., 2022, Analysis of Neutral B-Meson Decays into Two Muons, PHYSICAL REVIEW LETTERS, Vol: 128, ISSN: 0031-9007
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- Citations: 33
Aaij R, Abdelmotteleb ASW, Beteta CA, et al., 2022, Measurement of χ<sub><i>c</i>1</sub> (3872) production in proton-proton collisions at √<i>s</i>=8 and 13 TeV, JOURNAL OF HIGH ENERGY PHYSICS, ISSN: 1029-8479
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- Citations: 6
Aaij R, Abdelmotteleb ASW, Beteta CA, et al., 2022, Search for the radiative Ξ<sub>b</sub><SUP>-</SUP> → Ξ<SUP>-</SUP>γ decay, JOURNAL OF HIGH ENERGY PHYSICS, ISSN: 1029-8479
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- Citations: 3
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