Flavor and Charge Symmetry in the Parton Distributions of the Nucleon

Abstract

Recent calculations of charge symmetry violation(CSV) in the valence quark distributions of the nucleon have revealed that the dominant symmetry breaking contribution comes from the mass associated with the spectator quark system.Assuming that the change in the spectator mass can be treated perturbatively, we derive a model independent expression for the shift in the parton distributions of the nucleon. This result is used to derive a relation between the charge and flavor asymmetric contributions to the valence quark distributions in the proton, and to calculate CSV contributions to the nucleon sea. The CSV contribution to the Gottfried sum rule is also estimated, and found to be small.

References in corpus (4)

• Measurement of the Light Antiquark Flavor Asymmetry in the Nucleon Sea
• Flavor Asymmetry of Antiquark Distributions in the Nucleon
• An Improved Determination of ${\alpha }_S$ From Neutrino-Nucleon Scattering
• An Estimate of Charge Symmetry Breaking in Nuclear Deep Inelastic Scattering

Cited by in corpus (10)

• Improved Measurement of the $\bar{d}/\bar{u}$ Asymmetry in the Nucleon Sea
• High-Energy Hadron-Induced Dilepton Production from Nucleons and Nuclei
• Charge Symmetry at the Partonic Level
• Radiatively Generated Isospin Violations in the Nucleon and the NuTeV Anomaly
• Evidence for Substantial Charge Symmetry Violation in Parton Distributions
• Charge symmetry violation in the parton distributions of the nucleon
• Evidence for Charge Symmetry Violation in Parton Distributions
• Shadowing in neutrino deep inelastic scattering and the determination of the strange quark distribution
• Physics of the Nucleon Sea Quark Distributions
• Effect due to charge symmetry violation on the Paschos-Wolfenstein relation