We present the first measurement of the left-right cross-section asymmetry (A(LR)) in Z-boson production observed at the SLAC Linear Collider. In 1992 the SLD detector recorded 10 224 Z events produced by the collision of longitudinally polarized electrons with an unpolarized positron beam at a center-of-mass energy of 91.55 GeV. The average electron beam polarization during the run was (22.4 +/- 0.6)%. We measure A(LR) to be 0.100 +/- 0.044 (stat.) +/- 0.004 (syst.), which determines the effective weak mixing angle to be sin2 theta(W)eff = 0.2378 +/- 0.0056 (stat.) +/- 0.0005 (syst.).

Abe, K., Abt, I., Acton, P., Adolphsen, C., Agnew, G., Alber, C., et al. (1993). FIRST MEASUREMENT OF THE LEFT-RIGHT ASYMMETRY IN Z-BOSON PRODUCTION. MODERN PHYSICS LETTERS A, 8(24), 2237-2248 [10.1142/S0217732393003536].

FIRST MEASUREMENT OF THE LEFT-RIGHT ASYMMETRY IN Z-BOSON PRODUCTION

CARPINELLI, Massimo;
1993

Abstract

We present the first measurement of the left-right cross-section asymmetry (A(LR)) in Z-boson production observed at the SLAC Linear Collider. In 1992 the SLD detector recorded 10 224 Z events produced by the collision of longitudinally polarized electrons with an unpolarized positron beam at a center-of-mass energy of 91.55 GeV. The average electron beam polarization during the run was (22.4 +/- 0.6)%. We measure A(LR) to be 0.100 +/- 0.044 (stat.) +/- 0.004 (syst.), which determines the effective weak mixing angle to be sin2 theta(W)eff = 0.2378 +/- 0.0056 (stat.) +/- 0.0005 (syst.).
Articolo in rivista - Review Essay
Physics
English
1993
8
24
2237
2248
none
Abe, K., Abt, I., Acton, P., Adolphsen, C., Agnew, G., Alber, C., et al. (1993). FIRST MEASUREMENT OF THE LEFT-RIGHT ASYMMETRY IN Z-BOSON PRODUCTION. MODERN PHYSICS LETTERS A, 8(24), 2237-2248 [10.1142/S0217732393003536].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/390405
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