Probing Charge-Symmetry-Violating Quark Distributions in Semi-Inclusive Leptoproduction of Hadrons

Abstract

Recent experiments by the HERMES group at HERA are measuring semi-inclusive electroproduction of pions from deuterium. We point out that by comparing the production of ${\pi }^{+}$ and ${\pi }^{-}$ from an isoscalar target, it is possible, in principle, to measure charge symmetry violation in the valence quark distributions of the nucleons. It is also possible in the same experiments to obtain an independent measurement of the quark fragmentation functions. We review the information which can be deduced from such experiments and show the ``signature'' for charge symmetry violation in such experiments. Finally, we predict the magnitude of the charge symmetry violation, from both the valence quark distributions and the pion fragmentation function, which might be expected in these experiments.

19 pages plus 5 figures, used epsf

References in corpus (6)

• Global QCD Analysis and the CTEQ Parton Distributions
• The Proton Spin Puzzle and $\Lambda$ Polarization in Deep--Inelastic Scattering
• The strange quark spin of the proton in semi-inclusive $\Lambda$ leptoproduction
• Quark fragmentation functions in a diquark model for proton and $\Lambda$ hyperon production
• Flavour Distributions in the Nucleons: SU(2) Sea Asymmetry or Isospin Symmetry Breaking?
• DRELL-YAN PROCESSES AS A PROBE OF CHARGE SYMMETRY VIOLATION IN THE PION AND NUCLEON

Cited by in corpus (15)

• Parton Fragmentation Functions
• Collins fragmentation function for pions and kaons in a spectator model
• Charge Symmetry at the Partonic Level
• The NJL-jet model for quark fragmentation functions
• Charge Symmetry Breaking Effects in Pion and Kaon Structure
• Strange Magnetic Moment and Isospin Symmetry Breaking
• Strong Interaction Physics at the Luminosity Frontier with 22 GeV Electrons at Jefferson Lab
• Large-x d/u Ratio in W-boson Production
• Charge symmetry violation in the parton distributions of the nucleon
• Evidence for Charge Symmetry Violation in Parton Distributions
• Several Topics on Transverse Momentum-Dependent Fragmentation Functions
• Physics of the Nucleon Sea Quark Distributions
• Experimental Tests of Charge Symmetry Violation in Parton Distributions
• Testing Parton Charge Symmetry at HERA
• Impact of Charge Symmetry Breaking on Gluon and Sea Quark Distributions in the Pion and Kaon