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Report number arXiv:1304.4530 ; CERN-PH-EP-2013-051 ; LHCB-PAPER-2013-010 ; CERN-PH-EP-2013-051 ; LHCB-PAPER-2013-010
Title Observation of Bc+J/ψDs+ and Bc+J/ψDs+ decays
Author(s) LHCb Collaboration  Vis alle 625 forfattere
Publication 2013-06-28
Imprint 27 Jun 2013
Number of pages 10
Note Comments: 20 pages, 4 figures
20 pages, 4 figures
In: Phys. Rev. D 87 (2013) pp.112012
Phys. Rev. D 89, 1 (2014) pp.019901
DOI 10.1103/PhysRevD.87.112012
10.1103/PhysRevD.89.019901 (Publisher’s Note)
Subject category Particle Physics - Experiment
Accelerator/Facility, Experiment CERN LHC ; LHCb
Free keywords flavor physics ; B physics
Abstract The decays Bc+J/ψDs+ and Bc+J/ψDs+ are observed for the first time using a dataset, corresponding to an integrated luminosity of 3fb1, collected by the LHCb experiment in proton-proton collisions at centre-of-mass energies of s=7 and 8 TeV. The statistical significance for both signals is in excess of 9 standard deviations. The following ratios of branching fractions are measured to be BR(Bc+J/ψDs+)/BR(Bc+J/ψπ+)=2.90±0.57±0.24$, BR(Bc+J/ψDs+)/BR(Bc+J/ψDs+)=2.37±0.56±0.10, where the first uncertainties are statistical and the second systematic. The mass of the Bc+ meson is measured to be mBc+=6276.28±1.44(stat)±0.36(syst)MeV/c2, using the Bc+J/ψDs+ decay mode.
Copyright/License publication: © 2013-2025 CERN (License: CC-BY-3.0)
preprint: © 2013-2025 CERN (License: CC-BY-3.0)



Corresponding record in: Inspire
Email contact: lalaine.barbon.strebel@cern.ch


 Element opprettet 2013-06-27, sist endret 2024-08-17


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