CERN Accelerating science

CERN Document Server Znaleziono 254 rekordów  1 - 10następnykoniec  skocz do rekordu: Szukanie trwało 0.59 sekund. 
1.
Searches for 25 rare and forbidden decays of D+ and D+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;
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.
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;
4.
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;
5.
First observation of the decay B0D0¯D0K+π / LHCb Collaboration
The first observation of the decay B0D0¯D0K+π is reported using proton-proton collision data corresponding to an integrated luminosity of 4.7 fb1 collected by the LHCb experiment in 2011, 2012 and 2016. The measurement is performed in the full kinematically allowed range of the decay outside of the D region. [...]
arXiv:2007.04280; LHCb-PAPER-2020-015; CERN-EP-2020-112; LHCB-PAPER-2020-015.- 2020-09-23 - 11 p. - Published in : 10.1103/PhysRevD.102.051102 Article from SCOAP3: PDF; Fulltext: PDF; Fulltext from Publisher: PDF; Related data file(s): ZIP;
6.
Searches for low-mass dimuon resonances / LHCb Collaboration
Searches are performed for low-mass dimuon resonances, X, produced in proton-proton collisions at a center-of-mass energy of 13 TeV, using a data sample corresponding to an integrated luminosity of 5.1 fb1 and collected with the LHCb detector. The Xμ+μ decays can be either prompt-like or displaced from the proton-proton collision, where in both cases the requirements placed on the event and the assumptions made about the production mechanisms are kept as minimal as possible. [...]
arXiv:2007.03923; LHCb-PAPER-2020-013; CERN-EP-2020-114; LHCB-PAPER-2020-013.- 2020-10-26 - 27 p. - Published in : JHEP 2010 (2020) 156 Article from SCOAP3: PDF; Fulltext: PDF; Related data file(s): ZIP; Supplementary information: ZIP;
7.
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
8.
Search for CP violation in Ξ+cpKπ+ decays using model-independent techniques / LHCb Collaboration
A first search for CP violation in the Cabibbo-suppressed Ξ+cpKπ+ decay is performed using both a binned and an unbinned model-independent technique in the Dalitz plot. The studies are based on a sample of proton-proton collision data, corresponding to an integrated luminosity of 3.0 fb1, and collected by the LHCb experiment at centre-of-mass energies of 7 and 8 TeV. [...]
arXiv:2006.03145; CERN-EP-2020-069; LHCb-PAPER-2019-026; LHCB-PAPER-2019-026.- Geneva : CERN, 2020-10-26 - 16 p. - Published in : Eur. Phys. J. C 80 (2020) 986 Article from SCOAP3: PDF; Fulltext: PDF; Related data file(s): ZIP;
9.
Study of the ψ2(3823) and χc1(3872) states in B+(J/ψπ+π)K+ decays / LHCb Collaboration
The decays B+J/ψπ+πK+ are studied using a data set corresponding to an integrated luminosity of 9 fb1 collected with the LHCb detector in proton-proton collisions between 2011 and 2018. Precise measurements of the ratios of branching fractions with the intermediate ψ2(3823), χc1(3872) and ψ(2S) states are reported. [...]
arXiv:2005.13422; CERN-EP-2020-071; LHCb-PAPER-2020-009; LHCB-PAPER-2020-009.- Geneva : CERN, 2020-08-25 - 29 p. - Published in : JHEP 2008 (2020) 123 Article from SCOAP3: PDF; Fulltext: LHCb-PAPER-2020-009 - PDF; 2005.13422 - PDF; Related data files: ZIP; Supplementary information: ZIP; External link: Interactions.org article
10.
Measurement of the branching fractions for B+D+DK+, B+DD+K+, and B0DD0K+ decays / LHCb Collaboration
A measurement of four branching-fraction ratios for three-body decays of B mesons involving two open-charm hadrons in the final state is presented. Run 1 and Run 2 pp collision data are used, recorded by the LHCb experiment at centre-of-mass energies 7, 8, and 13 TeV and corresponding to an integrated luminosity of 9.1 fb1. [...]
arXiv:2005.10264; LHCb-PAPER-2020-006; CERN-EP-2020-056; LHCB-PAPER-2020-006.- Geneva : CERN, 2020-12-21 - 22 p. - Published in : JHEP 2012 (2020) 139 Article from SCOAP3: PDF; Fulltext: PDF; Related data file(s): ZIP; Supplementary information: ZIP;

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