Precise Measurement Of The Left Right Cross Section Asymmetry In Z Boson Production By Electron Positron Collisions

Download or read book Precise Measurement of the Left-right Cross Section Asymmetry in Z Boson Production by Electron-positron Collisions written by and published by . This book was released on 1994 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: A precise measurement of the left-right cross section asymmetry (A{sub LR}) for Z boson production by ee− collisions has been attained at the Slac Linear Collider with the SLD detector. We describe this measurement for the 1993 data run, emphasizing the significant improvements in polarized beam operation which took place for this run, where the luminosity-weighted electron beam polarization averaged 62.6 ± 1.2 %. Preliminary 1993 results for A{sub LR} are presented. When combined with the (less precise) 1992 result, the preliminary result for the effective weak mixing angle is sin2 [theta]{sub W {sup eff}} = 0.2290 ± 0.0010.