A new analysis of charge symmetry violation in parton distributions

Date

1999

Authors

Boros, C.
Steffens, F.
Londergan, J.
Thomas, A.

Editors

Advisors

Journal Title

Journal ISSN

Volume Title

Type:

Journal article

Citation

Physics Letters B: Nuclear Physics and Particle Physics, 1999; 468(1-2):161-167

Statement of Responsibility

Conference Name

Abstract

To date, the strongest indication of charge symmetry violation in parton distributions has been obtained by comparing the F<inf>2</inf> 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.

School/Discipline

Dissertation Note

Provenance

Description

Access Status

Rights

License

Grant ID

Call number

Persistent link to this record