We present a precise measurement of the left-right cross section asymmetry (ALR) for Z boson production by e+e- collisions. The measurement was performed at a center-of-mass energy of 91.26 GeV with the SLD detector at the SLAC Linear Collider (SLC). The luminosity-weighted average polarization of the SLC electron beam was (63.0 ± 1.1)%. Using a sample of 49 392 Z decays, we measure ALR to be 0.1628 ± 0.0071 (stat) ± 0.0028 (syst) which determines the effective weak mixing angle to be sin2θWeff=0. 2292±0.0009(stat)±0.0004(syst).

Abe, K., Abt, I., Ash, W., Aston, D., Bacchetta, N., Baird, K., et al. (1994). Precise measurement of the left-right cross section asymmetry in Z boson production by e+e- collisions. PHYSICAL REVIEW LETTERS, 73(1), 25-29 [10.1103/PhysRevLett.73.25].

Precise measurement of the left-right cross section asymmetry in Z boson production by e+e- collisions

CARPINELLI, Massimo;
1994

Abstract

We present a precise measurement of the left-right cross section asymmetry (ALR) for Z boson production by e+e- collisions. The measurement was performed at a center-of-mass energy of 91.26 GeV with the SLD detector at the SLAC Linear Collider (SLC). The luminosity-weighted average polarization of the SLC electron beam was (63.0 ± 1.1)%. Using a sample of 49 392 Z decays, we measure ALR to be 0.1628 ± 0.0071 (stat) ± 0.0028 (syst) which determines the effective weak mixing angle to be sin2θWeff=0. 2292±0.0009(stat)±0.0004(syst).
Articolo in rivista - Articolo scientifico
Physics
English
1994
73
1
25
29
none
Abe, K., Abt, I., Ash, W., Aston, D., Bacchetta, N., Baird, K., et al. (1994). Precise measurement of the left-right cross section asymmetry in Z boson production by e+e- collisions. PHYSICAL REVIEW LETTERS, 73(1), 25-29 [10.1103/PhysRevLett.73.25].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/390398
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