Evidence for Substantial Charge Symmetry Violation in Parton Distributions

C. Boros; J. T. Londergan; A. W. Thomas

doi:10.1103/PhysRevLett.81.4075

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Evidence for Substantial Charge Symmetry Violation in Parton Distributions

C. Boros, J. T. Londergan, and A. W. Thomas

Phys. Rev. Lett. 81, 4075 – Published 9 November 1998

Abstract

Charge symmetry for parton distributions can be tested by comparing structure functions from neutrino and charged lepton deep inelastic scattering. New experiments provide rather tight upper limits on parton charge symmetry violation (CSV) for intermediate $x$ , but suggest CSV effects at small $x$ . Careful study of several corrections fails to remove this low- $x$ discrepancy. We are thus forced to consider surprisingly large CSV effects in nucleon sea distributions.

Received 4 June 1998

DOI:https://doi.org/10.1103/PhysRevLett.81.4075

Authors & Affiliations

C. Boros¹, J. T. Londergan², and A. W. Thomas¹

¹Department of Physics and Mathematical Physics, and Special Research Center for the Subatomic Structure of Matter, University of Adelaide, Adelaide 5005, Australia
²Department of Physics and Nuclear Theory Center, Indiana University, Bloomington, Indiana 47405

The Difference between Protons and Neutrons

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Vol. 81, Iss. 19 — 9 November 1998

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