Physics – High Energy Physics – High Energy Physics - Experiment
Scientific paper
2004-01-16
Phys.Rev.D69:071101,2004
Physics
High Energy Physics
High Energy Physics - Experiment
8 pages, 2 figures, submitted to Phys. Rev. D (Rapid Communications)
Scientific paper
10.1103/PhysRevD.69.071101
We report a measurement of the production ratio of charged and neutral B mesons from Upsilon(4S) decays based on the ratio of efficiency-corrected yields for the charmonium modes J/psi K^+ and J/psi K^{0}_{S} with 81.9 fb^-1 of data collected with the BABAR detector on the Upsilon(4S) resonance at 10.580 GeV. We find a value of 1.006 +/- 0.036 (stat) +/- 0.031 (sys) for the ratio R^{+/0}=Gamma(Upsilon(4S) -> B^+ B^-)/Gamma(Upsilon(4S)->B^0 B^0bar).
Aubert B.
BABAR Collaboration
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