Flavor distributions in the nucleons: SU(2) sea asymmetry or isospin symmetry breaking?

  • The Gottfried sum-rule violation reported by the New Muon Collaboration was interpreted as an indication for a flavor asymmetry of the sea quark in the nucleon. We investigate the alternative possibility that isospin symmetry between the proton and the neutron is breaking. We examine systematically the consequences of this possibility for several processes, namely, neutrino deep inelastic scattering, the charged pion Drell-Yan process, the proton Drell-Yan process, and semi-inclusive deep inelastic scattering, and conclude that a decision between the two alternative explanations is possible.

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Author:Bo-Qiang Ma, Andreas SchäferORCiDGND, Walter GreinerGND
Parent Title (German):Physical review. D
Document Type:Article
Date of Publication (online):2006/07/11
Year of first Publication:1993
Publishing Institution:Universitätsbibliothek Johann Christian Senckenberg
Release Date:2006/07/11
Page Number:5
First Page:51
Last Page:55
Source:Phys. Rev. D 47, 51~V55 (1993), ©1993 The American Physical Society, http://link.aps.org/abstract/PRD/v47/p51
Institutes:Physik / Physik
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik
Licence (German):License LogoDeutsches Urheberrecht