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arXiv · 0906.5515

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

Stanley J. Brodsky·Felipe J. Llanes-Estrada·J. Timothy Londergan·Adam P. Szczepaniak
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Abstract

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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Stanley J. Brodsky, Felipe J. Llanes-Estrada, J. Timothy Londergan, Adam P. Szczepaniak. 2009-06-30. Reggeon Non-Factorizability and the J=0 Fixed Pole in DVCS. https://arxiv.org/abs/0906.5515

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