Measurements of B[subscript c][superscript +] Production and Mass with the B[subscript c][superscript +]→J/ψπ[superscript +] Decay
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Aaij-2012-Measurements of.pdf
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Author(s)
Williams, Michael
Date Issued
December 2012
Journal
Physical Review Letters
Publisher
American Physical Society
Citation
Aaij, R. et al. “Measurements of B[subscript c][superscript +] Production and Mass with the B[subscript c][superscript +]→J/ψπ[superscript +] Decay.” Physical Review Letters 109.23 (2012).
Version
Final published version
Abstract
Measurements of B[subscript c][superscript +] production and mass are performed with the decay mode B[subscript c][superscript +]→J/ψπ[superscript +] using 0.37 fb[superscript -1] 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[subscript c][superscript +]→J/ψπ[superscript +] and the B[superscript +]→J/ψK[superscript +] decays is measured to be (0.68±0.10(stat)±0.03(syst)±0.05(lifetime))% for B[subscript c][superscript +] and B[superscript +] mesons with transverse momenta pT>4 GeV/c and pseudorapidities 2.5<η<4.5. The B[subscript c][superscript +] 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[superscript +] meson is M(B[subscript c][superscript +])-M(B[superscript +])=994.6±1.3(stat)±0.6(syst) MeV/c2.
MIT Department
Massachusetts Institute of Technology. Department of Physics
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Creative Commons Attribution 3.0
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DOI of Published Version
https://doi.org/10.1103/PhysRevLett.109.232001
