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CERN Document Server 13 записей найдено  1 - 10следующий  перейти к записи: Поиск длился 0.59 секунд. 
1.
Observation of the B+J/ψηK+ decay / LHCb Collaboration
The B+J/ψηK+ decay is observed for the first time using proton-proton collision data collected by the LHCb experiment at centre-of-mass energies of 7, 8, and 13TeV, corresponding to a total integrated luminosity of 9fb1. The branching fraction of this decay is measured relative to the known branching fraction of the B+ψ(2S)K+ decays and found to be B(B+J/ψηK+)B(B+ψ(2S)K+)=(4.91±0.47±0.29±0.07)×102, where the first uncertainty is statistical, the second is systematic and the third is related to external branching fractions. [...]
arXiv:2303.09443; LHCb-PAPER-2022-054; CERN-EP-2023-022.- Geneva : CERN, 2023-08-25 - 19 p. Fulltext: 2303.09443 - PDF; Publication - PDF; Erratum - PDF; Related data file(s): ZIP;
2.
Search for CP violation in D+(s)KK+K+ decays / LHCb Collaboration
A search for direct CP violation in the Cabibbo-suppressed decay D+sKK+K+ and in the doubly Cabibbo-suppressed decay D+KK+K+ is reported. The analysis is performed with data collected by the LHCb experiment in proton-proton collisions at a centre-of-mass energy of 13 TeV corresponding to an integrated luminosity of 5.6 fb1. [...]
arXiv:2303.04062; LHCb-PAPER-2022-042; CERN-EP-2023-010; LHCB-PAPER-2022-042.- Geneva : CERN, 2023-07-07 - 18 p. - Published in : JHEP 2307 (2023) 067 Fulltext: 2303.04062 - PDF; document - PDF; Related data file(s): ZIP;
3.
Observation of the B0sχc1(3872)π+π decay / LHCb Collaboration
The first observation of the B0s(χc1(3872)J/ψπ+π)π+π decay is reported using proton-proton collision data, corresponding to integrated luminosities of 1, 2 and 6fb1, collected by the LHCb experiment at centre-of-mass energies of 7, 8 and 13TeV, respectively. The ratio of branching fractions relative to the B0s(ψ(2S)Jψπ+π)π+π decay is measured to be B(B0sχc1(3872)π+π)×B(χc1(3872)Jψπ+π)B(B0sψ(2S)π+π)×B(ψ(2S)Jψπ+π)=(6.8±1.1±0.2)×102, where the first uncertainty is statistical and the second systematic. [...]
arXiv:2302.10629; CERN-EP-2023-015; LHCb-PAPER-2022-049; LHcb-PAPER-2022-049.- Geneva : CERN, 2023-07-11 - 18 p. - Published in : JHEP 2307 (2023) 084 Fulltext: 2302.10629 - PDF; document - PDF; Related data file(s): ZIP;
4.
Charmonium production in pNe collisions at sNN=68.5 GeV / LHCb Collaboration
The measurement of charmonium states produced in proton-neon (pNe) collisions by the LHCb experiment in its fixed-target configuration is presented. The production of J/ψ and ψ(2S) mesons is studied with a beam of 2.5 TeV protons colliding on gaseous neon targets at rest, corresponding to a nucleon-nucleon centre-of-mass energy sNN=68.5 GeV. [...]
arXiv:2211.11645; CERN-EP-2022-216; LHCb-PAPER-2022-014.- Geneva : CERN, 2023-07-17 - 11 p. - Published in : Eur. Phys. J. C 83 (2023) 625 Fulltext: 2211.11645 - PDF; Publication - PDF; Related data file(s): ZIP;
5.
J/ψ and D0 production in sNN=68.5GeV PbNe collisions / LHCb Collaboration
The first measurement of J/ψ and D0 production in PbNe collisions by the LHCb experiment in its fixed-target configuration is reported. The production of J/ψ and D0 mesons is studied with a beam of lead ions with an energy of 2.5 TeV per nucleon colliding on gaseous neon targets at rest, corresponding to a nucleon-nucleon centre-of-mass energy of sNN = 68.5 GeV. [...]
arXiv:2211.11652; CERN-EP-2022-215; LHCb-PAPER-2022-011.- Geneva : CERN, 2023-07-25 - 9 p. - Published in : Eur. Phys. J. C 83 (2023) 658 Fulltext: 2211.11652 - PDF; document - PDF; Related data file(s): ZIP;
6.
Measurement of the ratio of branching fractions B(B+cB0sπ+)/B(B+cJ/ψπ+)Measurement of the ratio of branching fractions B(B+cB0sπ+)/B(B+cJ/ψπ+) / LHCb Collaboration
The ratio of branching fractions of B+cB0sπ+ and B+cJ/ψπ+ decays is measured with proton-proton collision data of a centre-of-mass energy of 13 TeV. The data were collected with the LHCb experiment during 2016--2018, corresponding to an integrated luminosity of 5.4 fb1. [...]
arXiv:2210.12000; LHCb-PAPER-2022-034; CERN-EP-2022-204; LHCB-PAPER-2022-034.- Geneva : CERN, 2023-07-07 - 12 p. - Published in : JHEP 2307 (2023) 066 Fulltext: 2210.12000 - PDF; document - PDF; Related data file(s): ZIP;
7.
Measurement of the Λ+c to D0 production cross-section ratio in peripheral PbPb collisions / LHCb Collaboration
We report on a measurement of the Λ+c to D0 production ratio in PbPb collisions at sNN = 5.02 TeV with the LHCb detector in the forward rapidity region 2< y < 4.5. The Λ+c (D0) hadrons are reconstructed via the decay channel Λ+cpk+π (D0kπ+) for 2$ <
arXiv:2210.06939; LHCb-PAPER-2021-046; CERN-EP-2022-148; LHCB-PAPER-2021-046.- Geneva : CERN, 2023-06-22 - 17 p. Fulltext: LHCB-PAPER-2021-046 - PDF; 2210.06939 - PDF; document - PDF; erratum - PDF; Related data file(s): ZIP; Supplementary information: ZIP;
8.
Amplitude analysis of the D+sππ+π+ decay / LHCb Collaboration
A Dalitz plot analysis of the D+sππ+π+ decay is presented. The analysis is based on proton-proton collision data recorded by the LHCb experiment at a centre-of-mass energy 8 TeV and corresponding to an integrated luminosity of 1.5fb1 [...]
arXiv:2209.09840; LHCb-PAPER-2022-030; CERN-EP-2022-173.- Geneva : CERN, 2023-07-26 - 35 p. - Published in : JHEP 2307 (2023) 204 Fulltext: 2209.09840 - PDF; LHCb-PAPER-2022-030 - PDF; Publication - PDF; Related data file(s): ZIP;
9.
Search for the lepton-flavour violating decays B0K0τ±μ / LHCb Collaboration
A first search for the lepton-flavour violating decays B0K0τ±μ is presented. The analysis is performed using a sample of proton-proton collision data, collected with the LHCb detector at centre-of-mass energies of 7, 8 and 13 TeV between 2011 and 2018, corresponding to an integrated luminosity of 9 fb1. [...]
arXiv:2209.09846; LHCb-PAPER-2022-021; CERN-EP-2022-154; LHCB-PAPER-2022-021.- Geneva : CERN, 2023-06-23 - 17 p. - Published in : JHEP 2306 (2023) 143 Fulltext: 2209.09846 - PDF; document - PDF; Related data file(s): ZIP;
10.
Amplitude analysis of the D+ππ+π+ decay and measurement of the ππ+ S-wave amplitude / LHCb Collaboration
An amplitude analysis of the D+ππ+π+ decay is performed with a sample corresponding to 1.5 fb1 of integrated luminosity of pp collisions at a centre-of-mass energy s=8\tev collected by the LHCb detector in 2012. The sample contains approximately six hundred thousand candidates with a signal purity of 95%. [...]
arXiv:2208.03300; LHCb-PAPER-2022-016; CERN-EP-2022-136; LHCB-PAPER-2022-016.- Geneva : CERN, 2023-06-09 - 21 p. - Published in : JHEP 2306 (2023) 044 Fulltext: 2208.03300 - PDF; LHCb-PAPER-2022-016 - PDF; Publication - PDF; Related data file(s): ZIP; Supplementary information: ZIP;

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1 O’Neil, Ryunosuke
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