A flexible two-component model of pion-nucleon transition distribution amplitudes is fitted to CLAS data and used to predict cross-sections and three leading-twist spin asymmetries for backward pion electroproduction.
Deeply Virtual Compton Scattering at HERA - A Probe of Asymptotia
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abstract
We demonstrate that the measurement of an azimuthal angle asymmetry in deeply virtual Compton scattering (DVCS) at HERA energies, is experimentally feasible and allows one to determine for the first time the ratio $\eta$, of the real to imaginary part of the DIS amplitude. We further show that such a measurement would discriminate between different scenarios of the energy dependence of $F_2(x,Q^2)$ at energies beyond those reachable at HERA.
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Toward an advanced phenomenology of $\pi N$ transition distribution amplitudes
A flexible two-component model of pion-nucleon transition distribution amplitudes is fitted to CLAS data and used to predict cross-sections and three leading-twist spin asymmetries for backward pion electroproduction.