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Article
Report number arXiv:1209.5634 ; LHCB-PAPER-2012-028 ; CERN-PH-EP-2012-275 ; LHCB-PAPER-2012-028 ; CERN-PH-EP-2012-275
Title Measurements of B+c production and mass with the B+cJ/ψπ+ decay
Author(s) LHCb Collaboration  ყველა 619 ავტორის ჩვენება
Publication 2012
Imprint 04 Oct 2012
Number of pages 15
Note Comments: 14 pages including author list, 3 figures
14 pages including author list, 3 figures. v3, corrected the eaten "%" in the production ratio, only affects the arXiv abstract
In: Phys. Rev. Lett. 109 (2012) 232001
DOI 10.1103/PhysRevLett.109.232001
Subject category Particle Physics - Experiment
Accelerator/Facility, Experiment CERN LHC ; LHCb
Free keywords flavor physics ; B physics ; spectroscopy ; heavy quark production ; experimental results
Abstract Measurements of B+c production and mass are performed with the decay mode B+cJ/ψπ+ using 0.37 fb1 of data collected in pp collisions at s=7 TeV by the LHCb experiment. The ratio of the production cross-section times branching fraction between the B+cJ/ψπ+ and the B+J/ψK+ decays is measured to be (0.68±0.10(stat.)±0.03(syst.)±0.05(lifetime))% for B+c and B+ mesons with transverse momenta pT>4GeV/c and pseudorapidities 2.5<η<4.5. The B+c mass is directly measured to be 6273.7±1.3(stat.)±1.6(syst.) MeV/c2, and the measured mass difference with respect to the B+ meson is M(B+c)M(B+)=994.6±1.3(stat.)±0.6(syst.) MeV/c2.
Copyright/License publication: © 2012-2024 CERN (License: CC-BY-3.0)

Corresponding record in: Inspire
Email contact: u.egede@imperial.ac.uk


 ჩანაწერი შექმნილია 2012-10-04, ბოლოს შესწორებულია 2024-08-17


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