Measurement of the forward-backward asymmetry of charm and bottom quarks at the z-pole using d-asterisk(+/-)-mesons
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Measurement of the forward-backward asymmetry of charm and bottom quarks at the z-pole using d-asterisk(+/-)-mesons

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Measurement of the forward-backward asymmetry of charm and bottom quarks at the z-pole using d-asterisk(+/-)-mesons

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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
Aquest document és un/a article, creat/da en: 1995

Este documento está disponible también en : http://dx.doi.org/10.1007/BF01556359
The forward-backward asymmetries for the processes e+e−→cc¯ and e+e−→bb¯at theZ resonance are measured using identifiedD *± mesons. In 905,000 selected hadronic events, taken in 1991 and 1992 with the DEL-PHI detector at LEP, 4757D *+→D 0π+ decays are reconstructed. Thec andb quark forward-backward asymmetries are determined to be: Acc¯FB=0.077±0.029(stat)±0.012(sys),Abb¯FB=0.059±0.062(stat)±0.024(sys). Constraining theb asymmetry to the value measured by DELPHI using independent analyses, the charm asymmetry is determined to be: Ac,constFB=0.068±0.027(stat)±0.011(sys). . This result corresponds to an effective electroweak mixing angle measured using charm quark events of: sin2θlepteff=0.2307±0.0062(stat)±0.0026(sys).

    DELPHI Collaboration Castillo Giménez, María Victoria Ferrer Soria, Antonio Higón Rodríguez, Emilio 1995 Measurement of the forward-backward asymmetry of charm and bottom quarks at the z-pole using d-asterisk(+/-)-mesons Zeitschrift für Physik C-Particles and Fields 66 3 341 354
http://dx.doi.org/10.1007/BF01556359
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