Precise determination of the weak mixing angle from a measurement of A{sub LR} in e{sup +}e{sup {minus}} {yields} Z{sup 0}
Conference
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OSTI ID:10157724
In the 1993 SLC/SLD run, the SLD recorded 50,000 Z events produced by the collision of longitudinally polarized electrons on unpolarized positrons at a center-of-mass energy of 91.26 GeV. The luminosity-weighted average polarization of the SLC electron beam was (63.0{+-}1.1)%. The authors measure the left-right cross-section asymmetry in Z boson production, A{sub LR}, to be 0.1628{+-}0.0071(stat.){+-}0.0028(syst.) which determines the effective weak mixing angle to be sin{sup 2}{theta}{sup eff}{sub W} = 0.2292 {+-} 0.0009(stat.) {+-} 0.0004(syst.).
- Research Organization:
- Stanford Linear Accelerator Center, Menlo Park, CA (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC03-76SF00515
- OSTI ID:
- 10157724
- Report Number(s):
- SLAC-PUB--6493; CONF-940327--2; ON: DE94013355
- Country of Publication:
- United States
- Language:
- English
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