CERN Accelerating science

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1.
Amplitude analysis of the B+D+DK+B+D+DK+ decay / LHCb Collaboration
Results are reported from an amplitude analysis of the B+D+DK+B+D+DK+ decay. The analysis is carried out using LHCb proton-proton collision data taken at s=7,8,s=7,8, and 1313 TeV, corresponding to a total integrated luminosity of 9 fb11. [...]
arXiv:2009.00026; LHCb-PAPER-2020-025; CERN-EP-2020-159.- 2020-12-07 - 48 p. - Published in : Phys. Rev. D 102 (2020) 112003 Article from SCOAP3: PDF; Fulltext: PDF; Related data file(s): ZIP; Supplementary information: ZIP;
2.
Measurement of the CKM angle γγ and B0s¯B0sB0s¯¯¯¯¯¯B0s mixing frequency with B0sDsh±π±πB0sDsh±π±π decays / LHCb Collaboration
The CKM angle γγ is measured for the first time from mixing-induced CPCP violation between B0sDsK±π±πB0sDsK±π±π and ˉB0sD±sKππ±¯B0sD±sKππ± decays reconstructed in proton-proton collision data corresponding to an integrated luminosity of 9 fb1fb1 recorded with the LHCb detector. A time-dependent amplitude analysis is performed to extract the CPCP-violating weak phase γ2βsγ2βs and, subsequently, γγ by taking the B0sB0s-ˉB0s¯B0s mixing phase βsβs as an external input. [...]
arXiv:2011.12041; LHCb-PAPER-2020-030; CERN-EP-2020-214; LHCB-PAPER-2020-030.- Geneva : CERN, 2021-03-15 - 46 p. - Published in : JHEP 2103 (2021) 137 Article from SCOAP3: PDF; Fulltext: LHCb-PAPER-2020-030_arxiv - PDF; 2011.12041 - PDF; Related data file(s): ZIP; Supplementary information: ZIP;
3.
Search for heavy neutral leptons in W+μ+μ±jetW+μ+μ±jet decays / LHCb Collaboration
A search is performed for heavy neutrinos in the decay of a WW boson into two muons and a jet. The data set corresponds to an integrated luminosity of approximately 3.0 fb13.0 fb1 of proton-proton collision data at centre-of-mass energies of 7 and 8 TeV8 TeV collected with the LHCb experiment. [...]
arXiv:2011.05263; LHCb-PAPER-2020-022; CERN-EP-2020-194; LHCB-PAPER-2020-022.- Geneva : CERN, 2021-03-22 - 15 p. - Published in : Eur. Phys. J. C 81 (2021) 248 Article from SCOAP3: PDF; Fulltext: 2011.05263 - PDF; LHCb-PAPER-2020-022 - PDF; Related data file(s): ZIP; Supplementary information: ZIP;
4.
Searches for 25 rare and forbidden decays of D+D+ and D+sD+s mesons / LHCb Collaboration
A search is performed for rare and forbidden charm decays of the form D+(s)h±+(), where h± is a pion or kaon and ()± is an electron or muon. The measurements are performed using proton-proton collision data, corresponding to an integrated luminosity of 1.6fb1, collected by the LHCb experiment in 2016. [...]
arXiv:2011.00217; LHCb-PAPER-2020-007; CERN-EP-2020-140.- 2021-06-07 - 24 p. - Published in : JHEP 2106 (2021) 044 Article from SCOAP3: PDF; Fulltext: PDF;
5.
Observation of new excited B0s states / LHCb Collaboration
A structure is observed in the B+K mass spectrum in a sample of proton--proton collisions at centre-of-mass energies of 7, 8, and 13 TeV, collected with the LHCb detector and corresponding to a total integrated luminosity of 9 fb1. The structure is interpreted as the result of overlapping excited B0s states. [...]
arXiv:2010.15931; LHCb-PAPER-2020-026; CERN-EP-2020-185; LHCB-PAPER-2020-026.- Geneva : CERN, 2021-07-12 - 17 p. - Published in : Eur. Phys. J. C 81 (2021) 601 Fulltext: LHCb-PAPER-2020-026 - PDF; document - PDF; 2010.15931 - PDF; Related data file(s): ZIP; Supplementary information: ZIP;
6.
Measurement of differential bˉb- and cˉc-dijet cross-sections in the forward region of pp collisions at s=13 TeV / LHCb Collaboration
The inclusive bˉb- and cˉc-dijet production cross-sections in the forward region of pp collisions are measured using a data sample collected with the LHCb detector at a centre-of-mass energy of 13 TeV in 2016. The data sample corresponds to an integrated luminosity of 1.6 fb1. [...]
arXiv:2010.09437; LHCb-PAPER-2020-018; CERN-EP-2020-174; LHCB-PAPER-2020-018.- Geneva : CERN, 2021-02-02 - 37 p. - Published in : JHEP 2102 (2021) 023 Article from SCOAP3: PDF; Fulltext: 2010.09437 - PDF; bb_cc_Run2_paper_v11 - PDF; Related data file(s): ZIP;
7.
Strong constraints on the bsγ photon polarisation from B0K0e+e decays / LHCb Collaboration
An angular analysis of the B0K0e+e decay is performed using a data sample corresponding to an integrated luminosity of 9 fb1 of pp collisions collected with the LHCb experiment. The analysis is conducted in the very low dielectron mass squared (q2) interval between 0.0008 and 0.257 GeV2, where the rate is dominated by the B0K0γ transition with a virtual photon [...]
arXiv:2010.06011; LHCb-PAPER-2020-020; CERN-EP-2020-176; LHCB-PAPER-2020-020.- Geneva : CERN, 2020-12-11 - 25 p. - Published in : JHEP 2012 (2020) 081 Article from SCOAP3: PDF; Fulltext: PDF; Related data file(s): ZIP;
8.
Observation of multiplicity-dependent prompt χc1(3872) and ψ(2S) production in pp collisions / LHCb Collaboration
The production of χc1(3872) and ψ(2S) hadrons is studied as a function of charged particle multiplicity in pp collisions at a center-of-mass energy of 8 TeV, corresponding to an integrated luminosity of 2 fb1. For both states, the fraction that is produced promptly at the collision vertex is found to decrease as charged particle multiplicity increases. [...]
arXiv:2009.06619; LHCb-PAPER-2020-023; CERN-EP-2020-161; LHCB-PAPER-2020-023.- Geneva : CERN, 2021-03-06 - 11 p. - Published in : Phys. Rev. Lett. 126 (2021) 092001 Article from SCOAP3: PDF; Fulltext: PDF; Fulltext from Publisher: PDF; Fulltext from publisher: PDF; Related data file(s): ZIP;
9.
Search for the doubly heavy Ξ0bc baryon via decays to D0pK / LHCb Collaboration
A search for the doubly heavy Ξ0bc baryon using its decay to the D0pK final state is performed using proton-proton collision data at a centre-of-mass energy of 13 TeV collected by the LHCb experiment between 2016 and 2018, corresponding to an integrated luminosity of 5.4 fb1. No significant signal is found in the invariant mass range from 6.7 to 7.2 GeV/c2. [...]
arXiv:2009.02481; LHCb-PAPER-2020-014; CERN-EP-2020-137; LHCB-PAPER-2020-014.- Geneva : CERN, 2020 - 21 p. - Published in : JHEP 2011 (2020) 095 Article from SCOAP3: PDF; Fulltext: PDF; Related data file(s): ZIP;
10.
A model-independent study of resonant structure in B+D+DK+ decays / LHCb Collaboration
The only anticipated resonant contributions to B+D+DK+ decays are charmonium states in the D+D channel. A model-independent analysis, using LHCb proton-proton collision data taken at centre-of-mass energies of s=7,8, and 13 TeV, corresponding to a total integrated luminosity of 9 fb1, is carried out to test this hypothesis. [...]
arXiv:2009.00025; LHCb-PAPER-2020-024; CERN-EP-2020-158.- 2020-12-07 - 17 p. - Published in : Phys. Rev. Lett. 125 (2020) 242001 Article from SCOAP3: PDF; Fulltext: PDF;

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