Published May 8, 2009 | Version v1
Journal article Metadata-only

Direct Measurement of the W Production Charge Asymmetry in pp Collisions at √(s)=1.96 TeV

Creators

  • 1. Division of High Energy Physics, Department of Physics, University of Helsinki and Helsinki Institute of Physics, FIN-00014, Helsinki (Finland)
  • 2. Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637 (United States)

Description

We present the first direct measurement of the W production charge asymmetry as a function of the W boson rapidity yW in pp collisions at √(s)=1.96 TeV. We use a sample of W→eν events in data from 1 fb-1 of integrated luminosity collected using the CDF II detector. In the region |yW|<3.0, this measurement is capable of constraining the ratio of up- and down-quark momentum distributions in the proton more directly than in previous measurements of the asymmetry that are functions of the charged-lepton pseudorapidity.

Additional details

Identifiers

DOI
10.1103/PhysRevLett.102.181801;
arXiv
arXiv:0901.2169v4;

Publishing Information

Journal Title
Physical Review Letters
Journal Volume
102
Journal Issue
18
Journal Page Range
p. 181801-181801.7
ISSN
0031-9007
CODEN
PRLTAO

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
41060213
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
Descriptors DEI
ASYMMETRY; D QUARKS; LEPTONS; PARTICLE RAPIDITY; PROTON-PROTON INTERACTIONS; TEV RANGE 01-10; U QUARKS; W MINUS BOSONS; W PLUS BOSONS
Descriptors DEC
BARYON-BARYON INTERACTIONS; BOSONS; ELEMENTARY PARTICLES; ENERGY RANGE; FERMIONS; HADRON-HADRON INTERACTIONS; INTERACTIONS; INTERMEDIATE BOSONS; INTERMEDIATE VECTOR BOSONS; NUCLEON-NUCLEON INTERACTIONS; PARTICLE INTERACTIONS; PARTICLE PROPERTIES; PROTON-NUCLEON INTERACTIONS; QUARKS; TEV RANGE

Optional Information

Notes
(c) 2009 The American Physical Society
Collaborations
CDF Collaboration