Constraints on PDFs from W and Z rapidity distributions at CDF

✍ Scribed by A. Bodek

• Book ID: 104356015
• Publisher: Elsevier Science
• Year: 1999
• Tongue: English
• Weight: 249 KB
• Volume: 79
• Category: Article
• ISSN: 0920-5632
• DOI: 10.1016/s0920-5632(99)00655-6

✦ Synopsis

The rapidity distributions of W and Z bosons produced in proton anti-proton collisions at CDF are presented. The rapidity distribution of Z bosons, measured for the first time over the entire kinematic range, is better described by NLO QCD (and also by QCD with gluon resummation) than by leading order QCD. The W charge asymmetry data as a function of rapidity strongly constrain the ratio of d and u quark momentum distributions in the proton over the x range of 0.006 to 0.34. The W data are used to rule out recently proposed models for charge and flavor symmetry violation of the sea quark distributions in the nucleon.