Implication of W-boson Charge Asymmetry Measurements in p-pbar Collisions for Models of Charge Symmetry Violations in Parton Distributions

Abstract

A surprisingly large charge symmetry violation of the sea quarks in the nucleon has been proposed in a recent article by Boros et al. as an explanation of the discrepancy between neutrino (CCFR) and muon (NMC) nucleon structure function data at low x. We show that these models are ruled out by the published CDF W charge asymmetry measurements, which strongly constrain the ratio of d and u quark momentum distributions in the proton over the x range of 0.006 to 0.34. This constraint also limits the systematic error from possible charge symmetry violation in the determination of sin^2(theta) from nu-N scattering experiments.

arXiv comment4 pages, 2 figures, Submitted to Phys. Rev. Lett

References in corpus (6)

• Improved Parton Distributions from Global Analysis of Recent Deep Inelastic Scattering and Inclusive Jet Data
• Higher Order Corrections to Jet Cross Sections in Hadron Colliders
• An Improved Determination of ${\alpha }_S$ From Neutrino-Nucleon Scattering
• Parton Distributions, d/u, and Higher Twist Effects at High X
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Cited by in corpus (11)

• Improved Measurement of the $\bar{d}/\bar{u}$ Asymmetry in the Nucleon Sea
• The Weak Charge of the Proton and New Physics
• Nuclear PDFs from neutrino deep inelastic scattering
• On the Effect of Asymmetric Strange Seas and Isospin-Violating Parton Distribution Functions on sin2thetaW Measured at NuTeV
• Charge Symmetry at the Partonic Level
• Charge Asymmetry of Weak Boson Production at the LHC and the Charm Content of the Proton
• Predictions for Neutrino Structure Functions
• Physics of the Nucleon Sea Quark Distributions
• Nuclear Parton Distribution Functions
• QCD Precision Measurements and Structure Function Extraction at a High Statistics, High Energy Neutrino Scattering Experiment: NuSOnG
• Expression of Interest for Neutrinos Scattering on Glass: NuSOnG