Charged track multiplicity in B meson decay

Journal article

We have used the CLEO II detector to study the multiplicity of charged particles in the decays of B mesons produced at the Y(4S) resonance. Using a sample of 1.5×106 B meson pairs, we find the mean inclusive charged particle multiplicity to be 10.71±0.02-0.15+0.21 for the decay of the pair. This corresponds to a mean multiplicity of 5.36±0.01-0.08+0.11 for a single B meson. Using the same data sample, we have also extracted the mean multiplicities in semileptonic and nonleptonic decays. We measure a mean of 7.82±0.05-0.19+0.21 charged particles per BB̄ decay when both mesons decay semileptonically. When neither B meson decays semileptonically, we measure a mean charged particle multiplicity of 11.62±0.04-0.18+0.24 per BB̄ pair. ©2000 The American Physical Society.

Authors: Brandenburg, G; Ershov, A; Gao, Y; Kim, D; Wilson, R

• Publication status: Published
• Journal: Physical Review D
• Volume: 61
• Issue: 7
• Pages: 1-6
• Publication date: 2000-04-01
• ISSN: 0556-2821
• Language: English