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Type: Journal article
Title: A new analysis of charge symmetry violation in parton distributions
Author: Boros, C.
Steffens, F.
Londergan, J.
Thomas, A.
Citation: Physics Letters B: Nuclear Physics and Particle Physics, 1999; 468(1-2):161-167
Issue Date: 1999
ISSN: 0370-2693
Abstract: To date, the strongest indication of charge symmetry violation in parton distributions has been obtained by comparing the F2 structure functions from CCFR neutrino data and NMC muon data. We show that in order to make precise tests of charge symmetry with the neutrino data, two conditions must be satisfied. First, the nuclear shadowing calculations must be made explicitly for neutrinos, not simply taken from muon data on nuclei. Second, the contribution of strange and charm quarks should be calculated explicitly using next-to-leading order (NLO) QCD, and the "slow rescaling" charm threshold correction should not be applied to the neutrino data. When these criteria are satisfied, the comparison is consistent with charge symmetry within the experimental errors and the present uncertainty in the strange quark distribution of the nucleon. © 1999 Published by Elsevier Science B.V. All rights reserved.
DOI: 10.1016/S0370-2693(99)01154-5
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Appears in Collections:Aurora harvest 2
Special Research Centre for the Subatomic Structure of Matter publications

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