First Measurement of the Left-right Z Cross Section Asymmetry in Polarized E[sup +]e[sup [minus] Collisions at the SLC.
Author | : |
Publisher | : |
Total Pages | : 7 |
Release | : 1993 |
ISBN-10 | : OCLC:727324773 |
ISBN-13 | : |
Rating | : 4/5 ( Downloads) |
Download or read book First Measurement of the Left-right Z Cross Section Asymmetry in Polarized E[sup +]e[sup [minus] Collisions at the SLC. written by and published by . This book was released on 1993 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: The SLAC Linear Collider (SLC) has recently been upgraded to produce, accelerate, and collide a spin polarized electron beam. The average beam polarization during the 1992 run was (22.4 [plus minus] 0.7)%. The SLD Collaboration used the polarized beam to perform the first measurement of the left-right cross section asymmetry (A[sub LR]) for Z boson production by e[sup +]e[sup [minus]] collisions. The measurement was performed at a center-of-mass energy of 91.55 GeV with a sample of 10,224 Z decays. The measured value of A[sub LR] is 0.100 [plus minus] 0.044(stat.) [plus minus] O.004(syst.) which determines the effective weak mixing angle to be sin[sup 2][theta][sub W][sup eff] = 0.2378 [plus minus] 0.0056(stat.) [plus minus] 0.0005(syst.).