Measurement of the Left-Right Asymmetry in Z0 Events at SLAC

Technical Report · Sun Jan 04 23:00:00 EST 2004

DOI:https://doi.org/10.2172/826660· OSTI ID:826660

Szumilo, A ^[1]

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1. SLAC

Recent results from the 1992 and 1993 left-right asymmetry cross section measurements at the Stanford Linear Accelerator Center are presented. Measurements made with SLAC running with a center-of-mass energy at the Z{sup 0}-pole (91.2 GeV) by the SLD detector and an average electron beam polarization of 22.4 {+-} 0.7% for 1992 and 62.6 {+-} 1.2% for 1993. The asymmetry measured was A{sub LR} = 0.100 {+-} 0.044 and A{sub LR} = 0.1656 {+-} 0.0073 for the 1992 and 1993 runs, respectively. This in turn allows them to calculate the weak mixing angle value of sin{sup 2} {theta}{sub W} = 0.2378 {+-} 0.0056 and sin{sup 2} {theta}{sub W} = 0.2288 {+-} 0.0009 for the two data sets.

• Research Organization: Stanford Linear Accelerator Center, Menlo Park, CA (US)
• Sponsoring Organization: USDOE Office of Science (US)
• DOE Contract Number: AC03-76SF00515
• OSTI ID: 826660
• Report Number(s): SLAC-R-686
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
ASYMMETRY
CROSS SECTIONS
ELECTRON BEAMS
POLARIZATION
STANFORD LINEAR ACCELERATOR CENTER