Measurement of the Electron Charge Asymmetry in pp → W + X → eν + X Events at √s = 1.96 TeV

Authors

• V. M. Abazov, Joint Institute for Nuclear Research, Dubna, Russia
• Kenneth A. Bloom, University of Nebraska-LincolnFollow
• Gregory Snow, University of Nebraska-LincolnFollow
• D0 Collaboration

Document Type

Article

Date of this Version

11-21-2008

Comments

Published in PHYSICAL REVIEW LETTERS 101, 211801 (2008). Copyright © 2008 The American Physical Society. Used by permission.

Abstract

We present a measurement of the electron charge asymmetry in pp → W + X → eν + X events at a center of mass energy of 1.96 TeV using 0.75 fb^-1 of data collected with the D0 detector at the Fermilab Tevatron Collider. The asymmetry is measured as a function of the electron transverse momentum and pseudorapidity in the interval (-3.2, 3.2) and is compared with expectations from next-to-leading order calculations in perturbative quantum chromodynamics. These measurements will allow more accurate determinations of the proton parton distribution functions.