Precise determination of the weak mixing angle from a measurement of {ital A}{sub {ital LR}} in ({ital e}{sup +}{ital e}{sup -}{implies}{ital Z}{sup 0})
- Stanford Linear Accelerator Center, Stanford University, Stanford, California 94309 (United States)
In the 1993 SLC/SLD run, the SLD recorded 50,000 {ital 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{plus_minus}1.1){percent}. We measure the left-right cross-section asymmetry in {ital Z} boson production, {ital A}{sub {ital LR}}, to be 0.1628{plus_minus}0.0071(stat.){plus_minus}0.0028(syst.) which determines the effective weak mixing angle to be sin{sup 2}{theta}{sub {ital W}}{sup eff}=0.2292{plus_minus}0.0009(stat.){plus_minus}0.0004(syst.). {copyright} {ital 1995 American Institute of Physics.}
- Research Organization:
- Stanford Linear Accelerator Center
- DOE Contract Number:
- AC03-76SF00515
- OSTI ID:
- 254156
- Report Number(s):
- CONF-9409103--
- Journal Information:
- AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 343; ISSN APCPCS; ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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