We present a new 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 91.28 GeV with the SLD detector at the SLAC Linear Collider (SLC). The luminosity-weighted average polarization of the SLC electron beam was (77.23 ± 0.52)%. Using a sample of 93 644 Z decays, we measure the pole value of the asymmetry, A0 LR, to be 0.1512 ± 0.0042(stat) ± 0.0011(syst), which is equivalent to an effective weak mixing angle of sin2θeff W=0.23100 ± 0.00054(stat) ± 0.00014(syst).

Abe, K., Abe, K., Abt, I., Akagi, T., Allen, N., Ash, W., et al. (1997). Improved measurement of the left-right Z0 cross section asymmetry. PHYSICAL REVIEW LETTERS, 78(11), 2075-2079 [10.1103/PhysRevLett.78.2075].

Improved measurement of the left-right Z0 cross section asymmetry

CARPINELLI, Massimo;
1997

Abstract

We present a new 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 91.28 GeV with the SLD detector at the SLAC Linear Collider (SLC). The luminosity-weighted average polarization of the SLC electron beam was (77.23 ± 0.52)%. Using a sample of 93 644 Z decays, we measure the pole value of the asymmetry, A0 LR, to be 0.1512 ± 0.0042(stat) ± 0.0011(syst), which is equivalent to an effective weak mixing angle of sin2θeff W=0.23100 ± 0.00054(stat) ± 0.00014(syst).
Articolo in rivista - Articolo scientifico
Physics
English
1997
78
11
2075
2079
none
Abe, K., Abe, K., Abt, I., Akagi, T., Allen, N., Ash, W., et al. (1997). Improved measurement of the left-right Z0 cross section asymmetry. PHYSICAL REVIEW LETTERS, 78(11), 2075-2079 [10.1103/PhysRevLett.78.2075].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/390198
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