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Measurement of the charge asymmetry of electrons from the decays of W bosons produced in p\bar{p} collisions at √=1.96 TeV

ContributorsCDF Collaboration
Published inPhysical review. D, vol. 104, no. 9, 092002
Publication date2021
First online date2021-11-09
Abstract

At the Fermilab Tevatron proton-antiproton (pp¯) collider, high-mass electron-neutrino (eν) pairs are produced predominantly in the process pp¯→W(→eν)+X. The asymmetry of the electron and positron yield as a function of their pseudorapidity constrain the slope of the ratio of the u- to d-quark parton distributions versus the fraction of the proton momentum carried by the quarks. This paper reports on the measurement of the electron-charge asymmetry using the full data set recorded by the Collider Detector at Fermilab in 2001–2011 and corresponding to 9.1  fb-1 of integrated luminosity. The measurement significantly improves the precision of the Tevatron constraints on the parton-distribution functions of the proton. Numerical tables of the measurement are provided.

Keywords
  • Anti-p p: scattering
  • Parton: distribution function
  • P: distribution function
  • W: leptonic decay
  • Charge: asymmetry
  • Positron: yield
  • Electron: charge
  • Batavia TEVATRON Coll
  • Slope
  • CDF
  • Anti-p p: colliding beams
  • Rapidity dependence
  • Experimental results
  • 1960 GeV-cms
Citation (ISO format)
CDF Collaboration. Measurement of the charge asymmetry of electrons from the decays of W bosons produced in p\bar{p} collisions at √=1.96 TeV. In: Physical review. D, 2021, vol. 104, n° 9, p. 092002. doi: 10.1103/physrevd.104.092002
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Article (Published version)
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Additional URL for this publicationhttps://link.aps.org/doi/10.1103/PhysRevD.104.092002
Journal ISSN2470-0010
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