Charged track multiplicity in B meson decay

Charged track multiplicity in B meson decay

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 cor...

Descripción completa

Detalles Bibliográficos
Autores principales: Brandenburg, G, Ershov, A, Gao, Y, Kim, D, Wilson, R, Browder, T, Li, Y, Rodriguez, J, Yamamoto, H, Bergfeld, T, Eisenstein, B, Ernst, J, Gladding, G, Gollin, G, Hans, R, Johnson, E, Karliner, I, Marsh, M, Palmer, M, Plager, C, Sedlack, C, Selen, M, Thaler, J, Williams, J, Edwards, K
Formato: Journal article
Lenguaje:English
Publicado: 2000
Descripción
Sumario: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.

Ejemplares similares