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Measurement of the forward-backward asymmetry of charm and bottom quarks at the Z pole using D*± mesons

par Abreu, Pedro;Adam, Wolfgang;Amaldi, Ugo;Baillon, P.;Barao, F.;Barring, Olof;Belokopytov, Yu;Bertrand, Daniel ;Bricman, Charles ;Brown, Roger
Référence Zeitschrift für Physik. C, Particles and fields, 66, 3, page (341-354)
Publication Publié, 1995-09

Article révisé par les pairs

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Résumé :

The forward-backward asymmetries for the processes {Mathematical expression} and {Mathematical expression} at the Z resonance are measured using identified D*± mesons. In 905,000 selected hadronic events, taken in 1991 and 1992 with the DEL-PHI detector at LEP, 4757 D*+→D0π+ decays are reconstructed. The c and b quark forward-backward asymmetries are determined to be: {Mathematical expression} Constraining the b asymmetry to the value measured by DELPHI using independent analyses, the charm asymmetry is determined to be: {Mathematical expression}. This result corresponds to an effective electroweak mixing angle measured using charm quark events of: {Mathematical expression} © 1995 Springer-Verlag.