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

A. Szumilo | Zendy

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

Author(s) -

A. Szumilo

Publication year - 2004

Publication title -

osti oai (u.s. department of energy office of scientific and technical information)

Language(s) - English

Resource type - Reports

DOI - 10.2172/826660

Subject(s) - asymmetry , physics , nuclear physics , beam energy , linear particle accelerator , center (category theory) , polarization (electrochemistry) , center of mass (relativistic) , electron , electron–positron annihilation , atomic physics , beam (structure) , particle physics , hadron , optics , crystallography , chemistry , classical mechanics , energy–momentum relation

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.

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