An Improved Measurement of the Left-Right Z0 Cross Section Asymmetry

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dc.creatorSLD Collaboration
dc.creatorAbe, K.
dc.creatorAbe, K.
dc.creatoral, I. Abt et
dc.date1996-11-18
dc.date.accessioned2026-07-07T12:02:14Z
dc.date.available2026-07-07T12:02:14Z
dc.descriptionWe 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, ALR0, to be 0.1512+-0.0042(stat.)+-0.0011(syst.) which is equivalent to an effective weak mixing angle of sin**2(theta_eff)=0.23100+-0.00054(stat.)+-0.00014(syst.).
dc.description16 pages, RevTeX document, no figures. Also available in gzip-compressed postscript form (58 Kb) at ftp://ftp.slac.stanford.edu/users/morris/alr95_preprint.ps.gz and /afs/slac.stanford.edu/public/users/morris/alr95_preprint.ps.gz. Uncompressed postscript file (214 Kb) available to DECNET users as SLC::USER_DISK_SLC1:[MORRIS]alr95_preprint.ps
dc.identifierhttps://arxiv.org/abs/hep-ex/9611011
dc.identifierhttp://arxiv.org/abs/hep-ex/9611011
dc.identifierPhys.Rev.Lett.78:2075-2079,1997
dc.identifierdoi:10.1103/PhysRevLett.78.2075
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/207370
dc.subjectHigh Energy Physics - Experiment
dc.titleAn Improved Measurement of the Left-Right Z0 Cross Section Asymmetry
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