CERN Accelerating science

CERN Document Server 171 εγγραφές βρέθηκαν  1 - 10επόμενοτέλος  μετάβαση στην εγγραφή: Η έρευνα πήρε 0.59 δευτερόλεπτα. 
1.
The LHCb upgrade I / LHCb Collaboration
The LHCb upgrade represents a major change of the experiment. The detectors have been almost completely renewed to allow running at an instantaneous luminosity five times larger than that of the previous running periods. [...]
arXiv:2305.10515; LHCb-DP-2022-002.- 2024-05-23 - 232 p. - Published in : JINST 19 (2024) P05065 Fulltext: document - PDF; 2305.10515 - PDF;
In : The Large Hadron Collider and The Experiments for Run 3
2.
Search for CPCP violation in Ξ+cpKπ+Ξ+cpKπ+ decays using model-independent techniques / LHCb Collaboration
A first search for CPCP violation in the Cabibbo-suppressed Ξ+cpKπ+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 fb13.0 fb1, and collected by the LHCb experiment at centre-of-mass energies of 77 and 8 TeV8 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;
3.
Measurement of the branching fractions for B+D+DK+B+D+DK+, B+DD+K+B+DD+K+, and B0DD0K+B0DD0K+ decays / LHCb Collaboration
A measurement of four branching-fraction ratios for three-body decays of BB mesons involving two open-charm hadrons in the final state is presented. Run 1 and Run 2 pppp collision data are used, recorded by the LHCb experiment at centre-of-mass energies 77, 88, and 1313 TeV and corresponding to an integrated luminosity of 9.19.1 fb11. [...]
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;
4.
Measurement of the Λ0bJ/ψΛΛ0bJ/ψΛ angular distribution and the Λ0bΛ0b polarisation in pppp collisions / LHCb Collaboration
This paper presents an analysis of the Λ0bJ/ψΛΛ0bJ/ψΛ angular distribution and the transverse production polarisation of Λ0bΛ0b baryons in proton-proton collisions at centre-of-mass energies of 7, 8 and 13 TeV. The measurements are performed using data corresponding to an integrated luminosity of 4.9 fb11, collected with the LHCb experiment. [...]
arXiv:2004.10563; LHCb-PAPER-2020-005; CERN-EP-2020-051; LHCB-PAPER-2020-005.- Geneva : CERN, 2020-06-17 - 30 p. - Published in : JHEP 2006 (2020) 110 Article from SCOAP3: PDF; Fulltext: PDF; Fulltext from publisher: PDF; Related data file(s): ZIP; Supplementary information: ZIP;
5.
Precision measurement of the B+cB+c meson mass / LHCb Collaboration
A precision measurement of the B+cB+c meson mass is performed using proton-proton collision data collected with the LHCb experiment at centre-of-mass energies of 7,87,8 and 1313 TeV, corresponding to a total integrated luminosity of 9.09.0 fb1. The B+c mesons are reconstructed via the decays B+cJ/ψπ+, B+cJ/ψπ+ππ+, B+cJ/ψpˉpπ+, B+cJ/ψD+s, B+cJ/ψD0K+ and B+cB0sπ+. [...]
arXiv:2004.08163; LHCb-PAPER-2020-003; CERN-EP-2020-048; LHCB-PAPER-2020-003.- Geneva : CERN, 2020-07-20 - 21 p. - Published in : JHEP 2007 (2020) 123 Article from SCOAP3: PDF; Fulltext: LHCb-PAPER-2020-003_arXiv - PDF; 2004.08163 - PDF; Related data file(s): ZIP;
6.
Observation of new Ξ0c baryons decaying to Λ+cK / LHCb Collaboration
The Λ+cK mass spectrum is studied with a data sample of pp collisions at a centre-of-mass energy of 13 TeV corresponding to an integrated luminosity of 5.6 fb1 collected by the LHCb experiment. Three Ξ0c states are observed with a large significance and their masses and natural widths are measured to be m(Ξc(2923)0)=2923.04±0.25±0.20±0.14 MeV,Γ(Ξc(2923)0)=7.1±0.8±1.8 MeV, m(Ξc(2939)0)=2938.55±0.21±0.17±0.14 MeV,Γ(Ξc(2939)0)=10.2±0.8±1.1 MeV, m(Ξc(2965)0)=2964.88±0.26±0.14±0.14 MeV,Γ(Ξc(2965)0)=14.1±0.9±1.3 MeV, where the uncertainties are statistical, systematic, and due to the limited knowledge of the Λ+c mass. [...]
arXiv:2003.13649; LHCb-PAPER-2020-004; CERN-EP-2020-038; LHCB-PAPER-2020-004.- Geneva : CERN, 2020-06-05 - 11 p. - Published in : Phys. Rev. Lett. Article from SCOAP3: PDF; Fulltext: LHCb_PAPER_2020_004_arXiv - PDF; 2003.13649 - PDF; Fulltext from Publisher: PDF; Related data files: ZIP; Supplementary information: ZIP;
7.
Measurement of the shape of the B0sDsμ+νμ differential decay rate / LHCb Collaboration
The shape of the B0sDsμ+νμ differential decay rate is obtained as a function of the hadron recoil using proton-proton collision data at a centre-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 1.7 fb1 collected by the LHCb detector. The B0sDsμ+νμ decay is reconstructed through the decays DsDsγ and DsKK+π. [...]
arXiv:2003.08453; LHCb-PAPER-2019-046; CERN-EP-2020-026; LHCB-PAPER-2019-046.- Geneva : CERN, 2020-12-22 - 32 p. - Published in : JHEP 2012 (2020) 144 Article from SCOAP3: PDF; Fulltext: 2003.08453 - PDF; LHCb-PAPER-2019-046 - PDF; Related data files: ZIP; Supplementary material: ZIP;
8.
Search for the lepton flavour violating decay B+K+μτ+ using B0s2 decays / LHCb Collaboration
A search is presented for the lepton flavour violating decay B+K+μτ+ using 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 τ leptons are selected inclusively, primarily via decays with a single charged particle. [...]
arXiv:2003.04352; LHCb-PAPER-2019-043; CERN-EP-2020-020; LHCB-PAPER-2019-043.- Geneva : CERN, 2020-06-22 - 19 p. - Published in : JHEP 2006 (2020) 129 Article from SCOAP3: PDF; Fulltext: LHCb-PAPER-2019-043 - PDF; 2003.04352 - PDF; Related data file(s): ZIP;
9.
Measurement of CP-averaged observables in the B0K0μ+μ decay / LHCb Collaboration
An angular analysis of the B0K0(K+π)μ+μ decay is presented using a data set corresponding to an integrated luminosity of 4.7fb1 of pp collision data collected with the LHCb experiment. The full set of CP-averaged observables are determined in bins of the invariant mass squared of the dimuon system. [...]
arXiv:2003.04831; LHCb-PAPER-2020-002; CERN-EP-2020-027; LHCB-PAPER-2020-002.- Geneva : CERN, 2020-07-02 - 13 p. - Published in : Phys. Rev. Lett. 125 (2020) 011802 Article from SCOAP3: PDF; Fulltext: 2003.04831 - PDF; LHCb_PAPER_2020_002 - PDF; Fulltext from Publisher: PDF; Supplementary material: ZIP;
10.
Search for the rare decays B0se+e and B0e+e / LHCb Collaboration
A search for the decays B0se+e and B0e+e is performed using data collected with the LHCb experiment in proton-proton collisions at center-of-mass energies of 7, 8 and 13TeV, corresponding to integrated luminosities of 1, 2 and 2fb1, respectively. No signal is observed. [...]
arXiv:2003.03999; LHCb-PAPER-2020-001; CERN-EP-2020-023; LHCB-PAPER-2020-001.- Geneva : CERN, 2020-05-28 - 11 p. - Published in : Phys. Rev. Lett. 124 (2020) 211802 Article from SCOAP3: PDF; Fulltext: PDF; Fulltext from Publisher: PDF; Fulltext from publisher: PDF; Related data file(s): ZIP; Supplementary information: ZIP;

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