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Can the total angular momentum of u-quarks in the nucleon be accessed at HERMES?

  • F. Ellinghaus
  • W.-D. Nowak
  • A.V. VinnikovEmail author
  • Z. Ye
Theoretical Physics

Abstract

We investigate the possibility of acquiring information on the generalized parton distribution E and, through a model for E, also on the u-quark total angular momentum Ju by studying deeply virtual Compton scattering and hard exclusive ρ0 electroproduction on a transversely polarized hydrogen target at HERMES. It is found that a change in Ju from zero to 0.4 corresponds to a 4σ (2σ) difference in the calculated transverse target-spin asymmetry in deeply virtual Compton scattering (ρ0 electroproduction), where σ is the total experimental uncertainty.

Keywords

Hydrogen Field Theory Angular Momentum Elementary Particle Quantum Field Theory 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag 2006

Authors and Affiliations

  • F. Ellinghaus
    • 1
  • W.-D. Nowak
    • 2
  • A.V. Vinnikov
    • 2
    • 3
    Email author
  • Z. Ye
    • 4
  1. 1.Department of PhysicsUniversity of ColoradoBoulderUSA
  2. 2.DESYZeuthenGermany
  3. 3.BLTP JINRDubnaRussia
  4. 4.DESYHamburgGermany

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