Direct Measurement of theWProduction Charge Asymmetry inpp¯Collisions ats=1.96 TeV

2009/01/31 by The CDF Collaboration, J. Adelman, T. Aaltonen +98 · 2 citations
Physics and Astronomy · #Algorithm #Astrophysics #Asymmetry #Charge (physics) #Charged particle #Computer science #Electron #High-Energy Particle Collisions Research #Ion #Lepton #Luminosity #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Production (economics) #Pseudorapidity #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #hep-ex

paper · pdf · doi:10.1103/physrevlett.102.181801

published as Phys.Rev.Lett.102:181801,2009 · Accepted to Phys. Rev. Lett

arxiv created 2009/04/15 · openalex publication_date 2009/05/06 · arxiv updated 2009/12/01 · openalex created_date 2016/11/04 · openalex updated_date 2026/08/06

Abstract

We present the first direct measurement of the W production charge asymmetry as a function of the W boson rapidity y_W in pp collisions at √(s)=1.96 TeV. We use a sample of W\ensuremath→e\ensuremathν events in data from 1 fb^\ensuremath-1 of integrated luminosity collected using the CDF II detector. In the region |y_W|<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.

Citations

• Measurement of the forward-backward charge asymmetry fromW→eνproduction inpp¯collisions ats=1.96 TeV
• Measurement of theJ/ψmeson andb-hadron production cross sections inpp¯collisions ats=1960 GeV
• Matching NLO QCD and parton showers in heavy flavour production

Cited by

• Measurements of differential and double-differential Drell–Yan cross sections in proton–proton collisions at √(s) = 8 s = 8 \text TeV TeV
• A first unbiased global NLO determination of parton distributions and their uncertainties