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

F. Ellinghaus, W.-D. Nowak, A.V. Vinnikov, Z. Ye
2006 European Physical Journal C: Particles and Fields  
We investigate the possibility to acquire information on the generalized parton distribution E and, through a model for E, also on the u-quark total angular momentum J_u by studying deeply virtual Compton scattering and hard exclusive rho0 electroproduction on a transversely polarized hydrogen target at HERMES. It is found that a change in J_u from zero to 0.4 corresponds to a 4\sigma (2\sigma) difference in the calculated transverse target-spin asymmetry in deeply virtual Compton scattering
more » ... mpton scattering (rho0 electroproduction), where \sigma is the total experimental uncertainty.
doi:10.1140/epjc/s2006-02529-3 fatcat:rivrficobjginfdnjt3lmu4ncq