CERN Accelerating science

CERN Document Server 找到 373 筆記錄  1 - 10下一個最後  跳到記錄: 檢索需時 0.63 秒. 
1.
Search for Darkonium in e+e Collisions / BABAR Collaboration
Collider searches for dark sectors, new particles interacting only feebly with ordinary matter, have largely focused on identifying signatures of new mediators, leaving much of dark sector structures unexplored. In particular, the existence of dark matter bound states (darkonia) remains to be investigated. [...]
arXiv:2106.08529; BABAR-PUB-21/002; SLAC-PUB-17608.- 2022-01-11 - 10 p. - Published in : Phys. Rev. Lett. 128 (2022) 021802 Fulltext: PDF;
2.
Measurement of the ratio of branching fractions of the decays Λ0bψ(2S)Λ and Λ0bJ/ψΛ / LHCb Collaboration
Using pp collisions corresponding to 3fb1 integrated luminosity, recorded by the LHCb experiment at centre-of-mass energies of 7 and 8TeV, the ratio of branching fractions B(Λ0bψ(2S)Λ)/B(Λ0bJ/ψΛ)=0.513±0.023(stat)±0.016(syst)±0.011(B) is determined. The first uncertainty is statistical, the second is systematic and the third is due to the external branching fractions used..
arXiv:1902.02092; LHCb-PAPER-2017-041; CERN-EP-2019-003.- Geneva : CERN, 2019-03-22 - 16 p. - Published in : JHEP 03 (2019) 126 Article from SCOAP3: PDF; Fulltext: LHCb-Paper-2017-041 - PDF; 1902.02092 - PDF; Related data file(s): ZIP;
3.
Measurement of Υ production in pp collisions at s= 13 TeV / LHCb Collaboration
The production cross-sections of Υ(1S), Υ(2S) and Υ(3S) mesons in proton-proton collisions at s= 13 TeV are measured with a data sample corresponding to an integrated luminosity of 277±11 pb1 recorded by the LHCb experiment in 2015. The Υ mesons are reconstructed in the decay mode Υμ+μ. [...]
arXiv:1804.09214; LHCB-PAPER-2018-002; CERN-EP-2018-054; LHCB-PAPER-2018-002.- 2018-07-20 - 26 p. Article from SCOAP3: PDF; Fulltext: PDF; Related data file(s): ZIP; External link: Figures, tables and other information
4.
Observation of B0s¯D0ϕ and search for B0¯D0ϕ decays / LHCb Collaboration
The first observation of the B0s¯D0ϕ decay is reported, with a significance of more than seven standard deviations, from an analysis of pp collision data corresponding to an integrated luminosity of 3 fb1, collected with the LHCb detector at centre-of-mass energies of 7 and 8 TeV. The branching fraction is measured relative to that of the topologically similar decay B0¯D0π+π and is found to be B(B0s¯D0ϕ)=(3.7±0.5±0.3±0.2)×105, where the first uncertainty is statistical, the second systematic, and the third from the branching fraction of the B0¯D0π+π decay. [...]
arXiv:1807.01892; LHCb-PAPER-2018-015; CERN-EP-2018-158; LHCB-PAPER-2018-015.- 2018-10-30 - 10 p. - Published in : Phys. Rev. D 98 (2018) 071103 Article from SCOAP3: PDF; Fulltext: PDF; Related data file(s): ZIP; External link: Figures, tables and other information
5.
Observation of the decay B0s¯D0K+K / LHCb Collaboration
The first observation of the B0s¯D0K+K decay is reported, together with the most precise branching fraction measurement of the mode B0¯D0K+K. The results are obtained from an analysis of pp collision data corresponding to an integrated luminosity of 3.0 fb1. [...]
arXiv:1807.01891; LHCb-PAPER-2018-014; CERN-EP-2018-157; LHCB-PAPER-2018-014.- 2018-10-31 - 19 p. - Published in : Phys. Rev. D 98 (2018) 072006 Article from SCOAP3: PDF; Fulltext: LHCb-PAPER-2018-014-figures - ZIP; 1807.01891 - PDF; External link: Figures, tables and other information
6.
Central exclusive production of J/ψ and ψ(2S) mesons in pp collisions at s=13 TeV / LHCb Collaboration
Measurements are reported of the central exclusive production of \jpsi and \psitwos mesons in pp collisions at a centre-of-mass energy of 13 TeV. Backgrounds are significantly reduced compared to previous measurements made at lower energies through the use of new forward shower counters. [...]
arXiv:1806.04079; LHCB-PAPER-2018-011; LHCb-PAPER-2018-011; CERN-EP-2018-152.- Geneva : CERN, 2018-10-26 - 27 p. - Published in : JHEP 10 (2018) 167 Article from SCOAP3: PDF; Fulltext: PDF; Related data file(s): ZIP; External link: Figures, tables and other information
7.
Search for a dimuon resonance in the Υ mass region / LHCb Collaboration
A search is performed for a spin-0 boson, ϕ, produced in proton-proton collisions at centre-of-mass energies of 7 and 8 TeV, using prompt ϕμ+μ decays and a data sample corresponding to an integrated luminosity of approximately 3.0 fb1 collected with the LHCb detector. No evidence is found for a signal in the mass range from 5.5 to 15 GeV. [...]
arXiv:1805.09820; LHCb-PAPER-2018-008; CERN-EP-2018-111; LHCB-PAPER-2018-008; LHCB-PAPER-2018-008.- Geneva : CERN, 2018-09-26 - 22 p. - Published in : JHEP 09 (2018) 147 Article from SCOAP3: PDF; Fulltext: PDF; Related data file(s): ZIP; Supplementary information: ZIP; External link: Figures, tables and other information
8.
Measurement of the time-integrated CP asymmetry in D0K0SK0S decays / LHCb Collaboration
A measurement of the time-integrated CP asymmetry in D0K0SK0S decays is reported. The data correspond to an integrated luminosity of about 2 fb1 collected in 2015-2016 by the LHCb collaboration in pp collisions at a centre-of-mass energy of 13 TeV [...]
arXiv:1806.01642; LHCb-PAPER-2018-012; CERN-EP-2018-133; LHCB-PAPER-2018-012.- Geneva : CERN, 2018-11-08 - 19 p. - Published in : JHEP 11 (2018) 048 Article from SCOAP3: PDF; Fulltext: PDF; Related data file(s): ZIP; Supplementary information: ZIP; External link: Figures, tables and other information
9.
Measurement of D±s production asymmetry in pp collisions at s=7 and 8 TeV / LHCb Collaboration
The inclusive D±s production asymmetry is measured in pp collisions collected by the LHCb experiment at centre-of-mass energies of s=7 and 8 TeV. Promptly produced D±s mesons are used, which decay as D±sϕπ±, with ϕK+K [...]
arXiv:1805.09869; LHCb-PAPER-2018-010; CERN-EP-2018-073; LHCB-PAPER-2018-010.- Geneva : CERN, 2018-08-02 - 22 p. - Published in : JHEP 08 (2018) 008 Article from SCOAP3: PDF; Fulltext: arXiv:1805.09869 - PDF; 1805.09869 - PDF; LHCb-PAPER-2018-010 - PDF; Related data file(s): ZIP; Supplementary Information: ZIP; External link: Figures, tables and other information
10.
Observation of a new Ξb resonance / LHCb Collaboration
From samples of pp collision data collected by the LHCb experiment at s=7, 8 and 13 TeV corresponding to integrated luminosities of 1.0, 2.0 and 1.5 fb1, respectively, a peak in both the Λ0bK and Ξ0bπ invariant mass spectra is observed. In the quark model, radially and orbitally excited Ξb resonances with quark content bds are expected. [...]
arXiv:1805.09418; LHCb-PAPER-2018-013; CERN-EP-2018-108; LHCB-PAPER-2018-013.- Geneva : CERN, 2018-08-16 - 12 p. - Published in : Phys. Rev. Lett. 121 (2018) 072002 Article from SCOAP3: PDF; Fulltext: arXiv:1805.09418 - PDF; 1805.09418 - PDF; Fulltext from Publisher: PDF; Related data file(s): ZIP; Supplementary information: ZIP; External link: Figures, tables and other information

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