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

2009

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

Brodsky, Stanley J., Llanes-Estrada, Felipe J., Londergan, J. Timothy et al.

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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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Slides presented at the conference: http://indico.cern.ch/contributionDisplay.py?contribId=101&sessionId=0&confId=53294
Cited in the paper.
A. P. Szczepaniak, J. T. Londergan and F. J. Llanes-Estrada, arXiv:0707.1239 [hep-ph]. To appear in APB
Original
Cited in the paper.
S. J. Brodsky, F. J. Llanes-Estrada and A. P. Szczepaniak, arXiv:0812.0395 [hep-ph], to appear in Phys. Rev. D
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Cited in the paper.

Then

A. Aktas et al
2005
Later among the works it cites.
A. P. Szczepaniak and J. T. Londergan, Phys. Lett. B 643
2006
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S. J. Brodsky and F. J. Llanes-Estrada, Eur. Phys. J. C 46
2006
Later among the works it cites.
S. J. Brodsky, F. J. Llanes-Estrada and A. P. Szczepaniak, In the Proceedings of 11th International Conference on Meson-Nucleon Physics and the Structure of the Nucleon (MENU 2007), Julich, Germany, 10-14 Sep 2007, pp 149
Original
2007
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