CERN Accelerating science

CERN Document Server Намерени са 73 записа  1 - 10следващкрай  отиване на запис: Търсенето отне 0.61 секунди. 
1.
Centrality determination in heavy-ion collisions with the LHCb detector / LHCb Collaboration
The centrality of heavy-ion collisions is directly related to the medium created therein. A procedure to determine the centrality of collisions with the LHCb detector is implemented for lead-lead collisions at sNN=5TeV and lead-neon fixed-target collisions at sNN=69GeV. [...]
arXiv:2111.01607; CERN-LHCb-DP-2021-002.- 2022-05-05 - 31 p. - Published in : JINST 17 (2022) P05009 Fulltext: 2111.01607 - PDF; document - PDF;
2.
Search for the doubly charmed baryon Ξ+cc in the Ξ+cππ+ final state / LHCb Collaboration
A search for the doubly charmed baryon Ξ+cc is performed in the Ξ+cππ+ invariant-mass spectrum, where the Ξ+c baryon is reconstructed in the pKπ+ final state. The study uses proton-proton collision data collected with the LHCb detector at a centre-of-mass energy of 13TeV, corresponding to a total integrated luminosity of 5.4fb1. [...]
arXiv:2109.07292; LHCb-PAPER-2021-019; CERN-EP-2021-155; LHCB-PAPER-2021-019.- Geneva : CERN, 2021-12-16 - 27 p. - Published in : JHEP 2112 (2021) 107 Fulltext: 2109.07292 - PDF; document - PDF; Fulltext from publisher: PDF; Related data file(s): ZIP; Supplementary information: ZIP;
3.
Measurement of the lifetimes of promptly produced Ω0c and Ξ0c baryons / LHCb Collaboration
A measurement of the lifetimes of the Ω0c and Ξ0c baryons is reported using proton--proton collision data at a centre-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 5.4 fb1 collected by the LHCb experiment. The Ω0c and Ξ0c baryons are produced directly from proton interactions and reconstructed in the pKKπ+ final state. [...]
arXiv:2109.01334; LHCb-PAPER-2021-021; CERN-EP-2021-167; LHCB-PAPER-2021-021.- Geneva : CERN, 2022-03-15 - 9 p. - Published in : Sci. Bull. 67 (2022) 479-487 Fulltext: 2109.01334 - PDF; LHCb-PAPER-2021-021 - PDF; Fulltext from publisher: PDF; Related data file(s): ZIP; Supplementary information: ZIP;
4.
Updated search for B+c decays to two charm mesons / LHCb Collaboration
A data set corresponding to an integrated luminosity of 9\, fb1 of proton-proton collisions collected by the LHCb experiment has been analysed to search for B+cD()+(s)(¯D)()0 decays. The decays are fully or partially reconstructed, where one or two missing neutral pions or photons from the decay of an excited charm meson are allowed. [...]
arXiv:2109.00488; LHCb-PAPER-2021-023; CERN-EP-2021-154; LHCB-PAPER-2021-023.- Geneva : CERN, 2021 - 23 p. - Published in : JHEP 2112 (2021) 117 Fulltext: PDF; Related data file(s): ZIP; Supplementary information: ZIP;
5.
Measurement of J/ψ production cross-sections in pp collisions at s=5 TeV / LHCb Collaboration
The production cross-sections of J/ψ mesons in proton-proton collisions at a centre-of-mass energy of s=5 TeV are measured using a data sample corresponding to an integrated luminosity of 9.13±0.18 pb1, collected by the LHCb experiment. The cross-sections are measured differentially as a function of transverse momentum, pT, and rapidity, y, and separately for J/ψ mesons produced promptly and from beauty hadron decays (nonprompt). [...]
arXiv:2109.00220; LHCb-PAPER-2021-020; CERN-EP-2021-156; LHCB-PAPER-2021-020.- Geneva : CERN, 2021 - 34 p. - Published in : JHEP 2111 (2021) 181 Fulltext: PDF; Fulltext from publisher: PDF; Related data file(s): ZIP; Supplementary information: ZIP;
6.
Measurement of the Nuclear Modification Factor and Prompt Charged Particle Production in pPb and pp Collisions at sNN=5  TeV / LHCb Collaboration
The production of prompt charged particles in proton-lead collisions and in proton-proton collisions at the nucleon-nucleon centre-of-mass energy sNN=5TeV is studied at LHCb as a function of pseudorapidity (η) and transverse momentum (pT) with respect to the proton beam direction. The nuclear modification factor for charged particles is determined as a function of η between 4.8<η<2.5 (backward region) and 2.0<η<4.8 (forward region), and pT between 0.2<pT<8.0GeV/c. [...]
arXiv:2108.13115; LHCb-PAPER-2021-015; CERN-EP-2021-130; LHCB-PAPER-2021-015.- Geneva : CERN, 2022-04-07 - 12 p. - Published in : Phys. Rev. Lett. 128 (2022) 142004 Fulltext: PDF; Related data file(s): ZIP; Supplementary information: ZIP;
7.
Measurement of the B0sμ+μ decay properties and search for the B0μ+μ and B0sμ+μγ decays / LHCb Collaboration
An improved measurement of the decay B0sμ+μ and searches for the decays B0μ+μ and B0sμ+μγ are performed at the LHCb experiment using data collected in proton-proton collisions at s=7, 8 and 13 TeV, corresponding to integrated luminosities of 1, 2 and 6 fb1, respectively. The B0sμ+μ branching fraction and effective lifetime are measured to be B(B0sμ+μ)=(3.09+0.46+0.150.430.11)×109 and τ(B0sμ+μ)=(2.07±0.29±0.03) ps, respectively, where the uncertainties include both statistical and systematic contributions. [...]
arXiv:2108.09283; CERN-EP-2021-133; LHCb-PAPER-2021-008; LHCB-PAPER-2021-008.- 2022-01-01 - 52 p. - Published in : Phys. Rev. D 105 (2022) 012010 Fulltext: PhysRevD.105.012010 - PDF; 2108.09283 - PDF; Related data file(s): ZIP; Supplementary information: ZIP;
8.
Analysis of neutral B-meson decays into two muons / LHCb Collaboration
Branching fraction and effective lifetime measurements of the rare decay B0sμ+μ and searches for the decays B0μ+μ and B0sμ+μγ are reported using proton-proton collision data collected with the LHCb detector at centre-of-mass energies of 7 TeV, 8 TeV and 13 TeV, corresponding to a luminosity of 9 fb1. The branching fraction B(B0sμ+μ)=(3.09+0.46+0.150.430.11)×109 and the effective lifetime τ(B0sμ+μ)=(2.07±0.29±0.03) are measured, where the first uncertainty is statistical and the second systematic. [...]
arXiv:2108.09284; CERN-CERN-EP-2021-132; LHCb-PAPER-2021-007; LHCB-PAPER-2021-007.- Geneva : CERN, 2022-01-25 - 20 p. - Published in : Phys. Rev. Lett. 128 (2022) 041801 Fulltext: 2108.09284 - PDF; PhysRevLett.128.041801 - PDF; Related data file(s): ZIP;
9.
Search for the radiative ΞbΞγ decay / LHCb Collaboration
The first search for the rare radiative decay ΞbΞγ is performed using data collected by the LHCb experiment in proton-proton collisions at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 5.4 fb1. The ΞbΞJ/ψ channel is used as normalization. [...]
arXiv:2108.07678; LHCb-PAPER-2021-017; CERN-EP-2021-128; LHCB-PAPER-2021-017.- 2022-01-14 - 20 p. - Published in : JHEP 2201 (2022) 069 Fulltext: 2108.07678 - PDF; document - PDF; Related data file(s): ZIP;
10.
Evidence for a new structure in the J/ψp and J/ψˉp systems in B0sJ/ψpˉp decays / LHCb Collaboration
An amplitude analysis of flavour-untagged B0sJ/ψpˉp decays is performed using a sample of 797±31 decays reconstructed with the LHCb detector. The data, collected in proton-proton collisions between 2011 and 2018, correspond to an integrated luminosity of 9 fb1. [...]
arXiv:2108.04720; LHCb-PAPER-2021-018; CERN-EP-2021-150; LHCB-PAPER-2021-018.- Geneva : CERN, 2022-02-07 - 11 p. - Published in : Phys. Rev. Lett. 128 (2022) 062001 Fulltext: LHCb-PAPER-2021-018_arxiv - PDF; PhysRevLett.128.062001 - PDF; 2108.04720 - PDF; Related data file(s): ZIP; Supplementary information: ZIP;

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1 Gaintseva, T
83 Gaintseva, Tatiana
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