Reggeon Non_Factorizability and Fixed Pole in DVCS

Conference · Mon Aug 03 00:00:00 EDT 2009

OSTI ID:962110

Brodsky, Stanley J; Llanes-Estrada, Felipe J; Londergan, J Timothy; Szczepaniak, Adam P

We argue that deeply virtual Compton scattering will display Regge behavior {nu}{sub R}{sup {alpha}}(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.

• Research Organization: SLAC National Accelerator Lab., Menlo Park, CA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC02-76SF00515
• OSTI ID: 962110
• Report Number(s): SLAC-PUB-13694; arXiv:0906.5515; TRN: US0902858
• Resource Relation: Conference: Talk given at 17th International Workshop on Deep-Inelastic Scattering and Related Subjects (DIS 2009), Madrid, Spain, 26-30 Apr 2009
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
AMPLITUDES
COMPTON EFFECT
PHOTONS
QUARKS
SCATTERING
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