First measurement of the strange quark asymmetry at the z(0) peak
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First measurement of the strange quark asymmetry at the z(0) peak

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First measurement of the strange quark asymmetry at the z(0) peak

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DELPHI Collaboration; Castillo Giménez, María Victoria Perfil; Ferrer Soria, Antonio Perfil; Higón Rodríguez, Emilio Perfil; Chrin, J. T. M.; Cortina Gil, Eduardo; Ferrer Soria, Antonio Perfil; Fuster Verdú, Juan A. Perfil; García García, Carmen Perfil; Gómez Cadenas, Juan José Perfil; Hernández Rey, Juan José Perfil; Hernando Morata, José Ángel; Lacasta Llácer, Carlos; Lozano Bahilo, José Julio; Martínez Vidal, Fernando Perfil; Martí García, Salvador; Navas Concha, Sergio; Salt Cairols, José Perfil; Valls Ferrer, Juan Antonio
This document is a artículoDate1995

Este documento está disponible también en : http://dx.doi.org/10.1007/BF01564817

Este documento está disponible también en : http://hdl.handle.net/10550/35043
A measurement of the strange quark forward-backward asymmetry at the Z0 peak was performed using 718,000 multihadronic Z0 decays collected by the DELPHI detector at LEP in 1992. Thes-quark was tagged by the presence of high momentum charged kaons identified by the Ring Imaging Cherenkov detector and byΛ 0;s decaying intopπ−. Thes-quark purity obtained was estimated for the two hadrons to be 43%. The averages-quark asymmetry was found to be 0.131±0.035 (stat.) ±0.013 (syst.). The forward-backward asymmetry was measured for unresolvedd-ands-quarks, tagged by the detection of a high energy neutron or neutral kaon in the Hadron Calorimeter. The combinedd-ands-quark purity was 69% and their asymmetry was found to be 0.112±0.031 (stat.) ±0.054 (syst.).

    DELPHI Collaboration Castillo Giménez, María Victoria Ferrer Soria, Antonio Higón Rodríguez, Emilio 1995 First measurement of the strange quark asymmetry at the z(0) peak Zeitschrift für Physik C-Particles and Fields 67 1 1 13
http://dx.doi.org/10.1007/BF01564817

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