Branching ratios of B mesons to K+,K−, and K0/K¯0

Abstract

By studying lepton-kaon angular correlations in Υ(4S) decays, we have measured the branching ratios for B¯→$K^{+}$X, B¯→$K^{\mathrm{-}}$X, B¯→$K^0$/K${¯}^0$X, B¯→$l^{\mathrm{-}}$ $K^{+}$X, B¯→$l^{\mathrm{-}}$ $K^{\mathrm{-}}$X, and B¯→$l^{\mathrm{-}}$ $K^0$/K${¯}^0$X. Their values imply that (b→c)/(b→all)=0.98±0.16±0.12.