Measurement of the forward - backward asymmetry of charm and bottom quarks at the Z pole using D*+- mesons
(1995) Zeitschrift für Physik. C, Particles and fields — Vol. 60, n° 3, p. 341-354 (1995)
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- Abstract
- The forward-backward asymmetries for the processes e+e−→ccˉ and e+e−→bbˉ 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: AccˉFB=0.077±0.029(stat)±0.012(sys),hfillAbbˉFB=0.059±0.062(stat)±0.024(sys).hfill 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).
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Citations
Abreu, P., Adam, W., Agasi, E., Ajinenko, I., Cortina Gil, E., DELPHI Collaboration, & et al. (1995). Measurement of the forward - backward asymmetry of charm and bottom quarks at the Z pole using D*+- mesons. Zeitschrift für Physik. C, Particles and fields, 60(3), 341-354. https://doi.org/10.1007/BF01556359 (Original work published 1995)