Evidence for BS0 meson production in Z0 decays

Evidence for BS0 meson production in Z0 decays

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Evidence for BS0 meson production in Z0 decays

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DELPHI Collaboration; Allen, Paul; Castillo Giménez, María Victoria Perfil; Chrin, J. T. M.; Cortina Gil, Eduardo; Fez Laso, M. D. M. de; Ferrer Soria, Antonio Perfil; Fuster Verdú, Juan A. Perfil; García García, Carmen Perfil; Gómez Cadenas, Juan José Perfil; Hernández Rey, Juan José Perfil; Higón Rodríguez, Emilio Perfil; Lozano Bahilo, José Julio; Lacasta Llácer, Carlos; Martí García, Salvador; Salt Cairols, José Perfil; Valls Ferrer, Juan Antonio; Zúñiga Román, Juan
This document is a artículoDate1992

Este documento está disponible también en : http://hdl.handle.net/10550/53852
Seven unambiguous events out of a sample of 270 000 Z0 decays, contain in tile same jet a D(s) meson and a muon at large transverse momentum relative to the et axis. These events are direct evidence for B(s)0 meson production in hadronic Z0 decays. The production rate of these events, relative to all hadronic Z0 decays is ( 18 +/- 8) x 10(-5) this number including the relevant branching fractions of the B(s)0 and D(s). The value of the B(s)0 meson lifetime relative to the average B meson lifetime is measured to be 0.8 +/- 0.4.

    DELPHI Collaboration Allen, Paul Castillo Giménez, María Victoria Chrin, J. T. M. Cortina Gil, Eduardo Fez Laso, M. D. M. de Ferrer Soria, Antonio Fuster Verdú, Juan A. García García, Carmen Gómez Cadenas, Juan José Hernández Rey, Juan José Higón Rodríguez, Emilio Lozano Bahilo, José Julio Lacasta Llácer, Carlos Martí García, Salvador Salt Cairols, José Valls Ferrer, Juan Antonio Zúñiga Román, Juan 1992 Evidence for BS0 meson production in Z0 decays Physics Letters B 289 1-2 199 210

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