Reggeon Non-Factorizability and the J=0 Fixed Pole in DVCS

Details Reggeon Non-Factorizability and the J=0 Fixed Pole in DVCS Reggeon Non-Factorizability and the J=0 Fixed Pole in DVCS

2009-06-30

arxiv.org/abs/0906.5515v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

5 pages, 4 figures, Proceedings of the XVII International Workshop on Deep-Inelastic Scattering and Related Subjects DIS 2009,

Scientific paper

We argue that deeply virtual Compton scattering will display Regge behavior nu^alpha_R(t) at high energy at fixed-t, even at high photon virtuality, not necessarily conventional scaling. A way to see this is to track the Reggeon contributions to quark-nucleon scattering and notice that the resulting Generalized Parton Distributions would have divergent behavior at the break-points. In addition, we show that the direct two-photon to quark coupling will be accessible at large $t$ where it dominates the DVCS amplitude for large energies. This contribution, the J=0 fixed-pole, should be part of the future DVCS experimental programs at Jlab or LHeC.

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