First Measurement of the Left-right Cross Section Asymmetry in Z Boson Production at E{sub Cm}
Author | : |
Publisher | : |
Total Pages | : 8 |
Release | : 1992 |
ISBN-10 | : OCLC:873475880 |
ISBN-13 | : |
Rating | : 4/5 ( Downloads) |
Download or read book First Measurement of the Left-right Cross Section Asymmetry in Z Boson Production at E{sub Cm} written by and published by . This book was released on 1992 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: The left-right cross section asymmetry for Z boson production in e[sup +]e[sup -] annihilation (A[sub LR]) has been measured at E[sub cm] = 91.55 GeV with the SLD detector at the SLAC Linear Collider (SLC) using a longitudinally polarized electron beam. The electron polarization was continually monitored with a Compton scattering polarimeter, and was typically 22%. We have accumulated a sample of [approximately]10,200 Z events. We find that A[sup LR] = 0.100 [plus minus] 0.044 [plus minus] 0.003 where the first error is statistical and the second is systematic. From this measurement, we determine the weak mixing angle defined at the Z boson pole to be sin[sup 2][theta](lept/w) = 0.2378 [plus minus] 0.0056.