Nonforward Compton scattering in AdS/CFT correspondence

Details Nonforward Compton scattering in AdS/CFT correspondence Nonforward Compton scattering in AdS/CFT correspondence

2009-12-22

arxiv.org/abs/0912.4333v4

Phys.Rev.D81:035008,2010

Physics

High Energy Physics

High Energy Physics - Phenomenology

36 pages, 6 figures, some factors corrected, conclusion not changed

Scientific paper

10.1103/PhysRevD.81.035008

We study the nonforward Compton scattering in particular the deeply virtual Compton scattering from AdS/CFT. We first calculate the contributions from the s-channel and u-channel supergravity diagrams as well as the four point interaction diagram which correspond to the Compton scatterings on a dilaton target in CFT. Furthermore, we study the Compton scattering on a dilatino target. Assuming that protons can be identified as supergravity modes of dilatino, we compare the calculated DVCS cross section to the low-energy experimental data from the H1 and ZEUS collaborations and find good agreement. We also discuss the t-channel graviton exchange contribution and show that it should be dominant in the high-energy limit.

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