The parity-violating parameters Ab and Ac are directly measured by the SLD experiment at the SLAC Linear Collider in e+e- collisions with polarized electrons at the Z0 resonance. Leptons with distinctive total and transverse momenta are used to select and analyze Z0→bb̄ and Z0→cc̄ events. Ab and Ac are extracted by forming the left-right forward-backward asymmetry in electron beam polarization and quark polar angle. From our 1993 sample of 1.8 pb-1 of Z0 decay data with an average electron beam polarization of 63% we find Ab=0.91±0.14 (stat) ± 0.07 (syst) and Ac=0.37±0.23 (stat) ± 0.21 (syst).

Abe, K., Abt, I., Ahn, C., Akagi, T., Ash, W., Aston, D., et al. (1995). Measurement of the parity-violation parameters Ab and Ac from the left-right forward-backward asymmetry of leptons in hadronic events at the Z0 resonance. PHYSICAL REVIEW LETTERS, 74(15), 2895-2899 [10.1103/PhysRevLett.74.2895].

Measurement of the parity-violation parameters Ab and Ac from the left-right forward-backward asymmetry of leptons in hadronic events at the Z0 resonance

CARPINELLI, Massimo;
1995

Abstract

The parity-violating parameters Ab and Ac are directly measured by the SLD experiment at the SLAC Linear Collider in e+e- collisions with polarized electrons at the Z0 resonance. Leptons with distinctive total and transverse momenta are used to select and analyze Z0→bb̄ and Z0→cc̄ events. Ab and Ac are extracted by forming the left-right forward-backward asymmetry in electron beam polarization and quark polar angle. From our 1993 sample of 1.8 pb-1 of Z0 decay data with an average electron beam polarization of 63% we find Ab=0.91±0.14 (stat) ± 0.07 (syst) and Ac=0.37±0.23 (stat) ± 0.21 (syst).
Articolo in rivista - Articolo scientifico
Physics
English
1995
74
15
2895
2899
none
Abe, K., Abt, I., Ahn, C., Akagi, T., Ash, W., Aston, D., et al. (1995). Measurement of the parity-violation parameters Ab and Ac from the left-right forward-backward asymmetry of leptons in hadronic events at the Z0 resonance. PHYSICAL REVIEW LETTERS, 74(15), 2895-2899 [10.1103/PhysRevLett.74.2895].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/390386
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