First Results From Sld With Polarized Electron Beam At Slc

Download or read book First Results from SLD with Polarized Electron Beam at SLC. written by and published by . This book was released on 1992 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt: The SLAC Linear Collider (SLC) has been modified to collide a longitudinally polarized electron beam with the unpolarized positron beam. We review the beginning of polarized beam running at the SLC, and report on the measurement of the left-right cross section asymmetry (A[sub LR]) made with a sample of 10,224 Z decays collected over the course of the 1992 run. The average beam polarization for this set of Z decays was 22.4 [plus minus] 0.6%(syst.). A[sub LR] was measured to be 0.100 [plus minus] 0.044(stat.) [plus minus] 0.004(syst.). From this measurement, the weak mixing angle defined at the Z boson pole is determined to be sin[sup 2][theta][sup eff][sub W] = 0.2378 [plus minus] 0.0056 [plus minus] 0.0005.