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1.
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;
2.
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;
3.
Observation of enhanced double parton scattering in proton-lead collisions at sNN=8.16 TeV / LHCb Collaboration
A study of prompt charm-hadron pair production in proton-lead collisions at sNN=8.16 TeV is performed using data corresponding to an integrated luminosity of about 30 nb1, collected with the LHCb experiment. Production cross-sections for different pairs of charm hadrons are measured and kinematic correlations between the two charm hadrons are investigated. [...]
arXiv:2007.06945; LHCb-PAPER-2020-010; CERN-EP-2020-119; LHCB-PAPER-2020-010.- Geneva : CERN, 2020-11-20 - 13 p. - Published in : Phys. Rev. Lett. 125 (2020) 212001 Article from SCOAP3: PDF; Fulltext: 2007.06945 - PDF; Paper-2020-010 - PDF; Related data file(s): ZIP; Supplementary information: ZIP;
4.
First observation of the decay Λ0bηc(1S)pK / LHCb Collaboration
The decay Λ0bηc(1S)pK is observed for the first time using a data sample of proton-proton collisions, corresponding to an integrated luminosity of 5.5 fb1, collected with the LHCb experiment at a centre-of-mass energy of 13 TeV. The branching fraction of the decay is measured, using the Λ0bJ/ψpK decay as a normalisation mode, to be B(Λ0bηc(1S)pK)=(1.06±0.16±0.06+0.220.19)×104, where the quoted uncertainties are statistical, systematic and due to external inputs, respectively. [...]
arXiv:2007.11292; LHCb-PAPER-2020-012; CERN-EP-2020-124; LHCB-PAPER-2020-012.- Geneva : CERN, 2020-12-23 - 12 p. - Published in : Phys. Rev. D 102 (2020) 112012 Article from SCOAP3: PDF; Fulltext: PDF; Fulltext from Publisher: PDF; Related data file(s): ZIP; Supplementary information: ZIP;
5.
Observation of the Λ0bΛ+cK+Kπ decay / LHCb Collaboration
The Λ0bΛ+cK+Kπ decay is observed for the first time using a data sample of proton-proton collisions at centre-of-mass energies of s=7 and 8 TeV collected by the LHCb detector, corresponding to an integrated luminosity of 3fb1. The ratio of branching fractions between the Λ0bΛ+cK+Kπ and the Λ0bΛ+cDs decays is measured to be B(Λ0bΛ+cK+Kπ)B(Λ0bΛ+cDs)=(9.26±0.29±0.46±0.26)×102, where the first uncertainty is statistical, the second systematic and the third is due to the knowledge of the DsK+Kπ branching fraction. [...]
arXiv:2011.13738; LHCb-PAPER-2020-028; CERN-EP-2020-209; LHCB-PAPER-2020-028; LHCB-PAPER-2020-028.- Geneva : CERN, 2021-04-10 - 20 p. - Published in : Phys. Lett. B 815 (2021) 136172 Article from SCOAP3: PDF; Fulltext: PAPER-LHCb-2020-028-arXiv - PDF; 2011.13738 - PDF; Related data file(s): ZIP;
6.
Search for heavy neutral leptons in W+μ+μ±jet decays / LHCb Collaboration
A search is performed for heavy neutrinos in the decay of a W boson into two muons and a jet. The data set corresponds to an integrated luminosity of approximately 3.0 fb1 of proton-proton collision data at centre-of-mass energies of 7 and 8 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;
7.
Search for long-lived particles decaying to e±μν / LHCb Collaboration
Long-lived particles decaying to e±μν, with masses between 7 and 50 GeV/c2 and lifetimes between 2 and 50 ps, are searched for by looking at displaced vertices containing electrons and muons of opposite charges. The search is performed using 5.4 fb1 of pp collisions collected with the LHCb detector at a centre-of-mass energy of s=13 TeV. [...]
arXiv:2012.02696; LHCb-PAPER-2020-027; CERN-EP-2020-212.- Geneva : CERN, 2021-03-26 - 16 p. - Published in : Eur. Phys. J. C 81 (2021) 261 Article from SCOAP3: PDF; Fulltext: PDF; Related data file(s): ZIP; Supplementary information: ZIP;
8.
First observation of the decay B0sKμ+νμ and measurement of |Vub|/|Vcb| / LHCb Collaboration
The first observation of the suppressed semileptonic B0sKμ+νμ decay is reported. Using a data sample recorded in pp collisions in 2012 with the LHCb detector, corresponding to an integrated luminosity of 2 fb1, the branching fraction B(B0sKμ+νμ)} is measured to be (1.06±0.05 (stat)±0.08 (syst))×104, where the first uncertainty is statistical and the second one represents the combined systematic uncertainties. [...]
arXiv:2012.05143; LHCb-PAPER-2020-038; CERN-EP-2020-224; CERN-EP-2020-224; LHCB-PAPER-2020-038.- Geneva : CERN, 2021-02-25 - 11 p. - Published in : Phys. Rev. Lett. 126 (2021) 081804 Article from SCOAP3: PDF; Fulltext: LHCb-PAPER-2020-038 - PDF; 2012.05143 - PDF; Related data file(s): ZIP; Supplementary information: ZIP;
9.
Observation of the B0sD±D decay / LHCb Collaboration
A search for the B0sD±D decay is performed using proton-proton collision data at centre-of-mass energies of 7, 8 and 13TeV collected by the LHCb experiment, corresponding to an integrated luminosity of 9fb1. The decay is observed with a high significance and its branching fraction relative to the B0D±D decay is measured to be B(B0sD±D)B(B0D±D)=0.137±0.017±0.002±0.006, where the first uncertainty is statistical, the second systematic and the third is due to the uncertainty on the ratio of the B0s and B0 hadronisation fractions..
arXiv:2012.11341; LHCb-PAPER-2020-037; CERN-EP-2020-230.- 2021-03-09 - 19 p. - Published in : JHEP 2103 (2021) 099 Article from SCOAP3: PDF; Fulltext: PDF; Related data file(s): ZIP; Supplementary information: ZIP;
10.
Observation of structure in the J/ψ-pair mass spectrum / LHCb Collaboration
Using proton-proton collision data at centre-of-mass energies of s=7, 8 and 13TeV recorded by the LHCb experiment at the Large Hadron Collider, corresponding to an integrated luminosity of 9fb1, the invariant mass spectrum of J/ψ pairs is studied. A narrow structure around 6.9GeV/c2 matching the lineshape of a resonance and a broad structure just above twice the J/ψ mass are observed. [...]
arXiv:2006.16957; CERN-EP-2020-115; LHCb-PAPER-2020-011; LHCB-PAPER-2020-011.- Geneva : CERN, 2020-12-15 - 11 p. - Published in : Sci. Bull. 65 (2020) 1983-1993 Fulltext: PDF; Related data file(s): ZIP; External link: Press Release

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