Measurement of the B^+/B^0 Production Ratio from the Upsilon(4S) Meson using B^+ -> J/psi K^+ and B^0 -> J/psi K^{0}_{S} Decays

Abstract

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).

8 pages, 2 figures, submitted to Phys. Rev. D (Rapid Communications)

Cited by in corpus (29)

• Charmonium
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• Measurement of the B->Xsl+l- branching fraction and search for direct CP violation from a sum of exclusive final states
• Study of the X(3872) and Y(4260) in B0-->J/psi pi+ pi- K0 and B-->J/psi pi+ pi- K- decays
• Observation of B+ --> K0bar K+ and B0 --> K0 K0bar
• B Meson Decays to eta(')K*, eta(')rho,eta(')pi0, omegapi0, and phipi0
• Amplitude Analysis of the Decay B+- -> pi+- pi+- pi-+
• Measurement of the $B^0\to D^{\ast -}{D}_s^{\ast +}$ and $D_s^{+}\to \varphi {\pi }^{+}$ Branching Fractions
• The $\bar{c}c$ purity of $\psi (3770)$ and ${\psi }^{\prime }$ challenged
• Branching ratio measurements and isospin violation in B-meson decays
• Measurement of the Branching Fraction of Upsilon(4S) --> B0B0bar
• Isospin breaking in the yield of heavy meson pairs in e+e- annihilation near threshold
• A search for CP violation and a measurement of the relative branching fraction in D+ -> KKpi decays
• Search for B-Meson Decays to Two-Body Final States with a0(980) Mesons
• Search for B+ -> phi pi+ and B0 -> phi pi0 Decays
• Search for Factorization-Suppressed B -> chi_c K(*) Decays
• Search for the decay B+ -> Kbar*0(892) K+
• Coulomb effects in the decays ${\rm Y}(4S)\to B\bar{B}$
• Search for Neutral B-Meson Decays to a0pi, a0K, etarho0, and etaf0
• Evidence for the Decay B+- --> K*+- pi0
• Search for the decay B0 --> J/psi gamma
• Evidence for B+ -> K0barK+ and B0 -> K0K0bar, and Measurement of the Branching Fraction and Search for Direct CP Violation in B+ -> K0pi+
• Structure-dependent radiative corrections to phi -> K^+K^-/K_LK_S decays
• Isospin in $B$ Decays and the $(B^0{\bar{B}}^0)/(B^{+}{B}^{-})$ Production Ratio
• Improving Extractions of |Vcb| and the b Quark Mass from Semileptonic Inclusive B Decay
• First Measurement of the Branching Fraction of e^+e^- --> B0B0bar
• Radiative Penguin Decays of B Mesons: Measurements of B -> K* gamma, B -> K2*(1430) gamma, and Search for B0 -> phi gamma
• Branching Fraction and CP Asymmetries of $B^0\to K_S^0{K}_S^0{K}_S^0$