Measurement of the multiplicity of gluons splitting to bottom quark in hadronic Z° decays
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Measurement of the multiplicity of gluons splitting to bottom quark in hadronic Z° decays

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Measurement of the multiplicity of gluons splitting to bottom quark in hadronic Z° decays

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DELPHI Collaboration; Alemany Fernández, Reyes; Cabrera Urbán, Susana Perfil; Castillo Giménez, María Victoria Perfil; Cortina Gil, Eduardo; Ferrer Soria, Antonio Perfil; Fuster Verdú, Juan A. Perfil; García García, Carmen Perfil; Hernández Rey, Juan José Perfil; Higón Rodríguez, Emilio Perfil; Lacasta Llácer, Carlos; Martínez Vidal, Fernando Perfil; Navas Concha, Sergio; Salt Cairols, José Perfil
This document is a artículoDate1997

Este documento está disponible también en : http://dx.doi.org/10.1016/S0370-2693(97)00608-4

Este documento está disponible también en : http://hdl.handle.net/10550/33894
An inclusive measurement of the average multiplicity of bb pairs from gluons, gbb, in hadronic Z0 events collected by the DELPHI experiment at LEP, is presented. A counting technique, based on jet b-tagging in 4-jet events, has been used. Looking for secondary bottom production in events with production of any primary flavour, by requiring two b-tagged jets in well defined topological configurations, gave gbb = (0.21 +/- 0.11 (stat) +/- 0.09(syst)) %. This result was checked with a different method designed to select events with four b quarks in the final state. Agreement within the errors was found.

    DELPHI Collaboration Alemany, R. Cabrera Urbán, Susana Castillo Giménez, María Victoria Cortina, E. Ferrer Soria, Antonio Fuster Verdú, Juan A. García García, Carmen Hernández Rey, Juan José Higón Rodríguez, Emilio Lacasta Llácer, Carlos Martínez Vidal, Fernando Navas, S. Salt Cairols, José 1997 Measurement of the multiplicity of gluons splitting to bottom quark in hadronic Z° decays Physics Letters B 405 1-2 202 214
http://dx.doi.org/10.1016/S0370-2693(97)00608-4

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