Deeply virtual Compton scattering from gauge/gravity duality

Journal Article · Mon Apr 15 00:00:00 EDT 2013 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4802124· OSTI ID:22116940

Costa, Miguel S.; Djuric, Marko ^[1]

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1. University of Porto (Portugal)

We use gauge/gravity duality to study deeply virtual Compton scattering (DVCS) in the limit of high center of mass energy at fixed momentum transfer, corresponding to the limit of low Bjorken x, where the process is dominated by the exchange of the pomeron. At strong coupling, the pomeron is described as the graviton Regge trajectory in AdS space, with a hard wall to mimic confinement effects. This model agrees with HERA data in a large kinematical range. The behavior of the DVCS cross section for very high energies, inside saturation, can be explained by a simple AdS black disk model. In a restricted kinematical window, this model agrees with HERA data as well.

• OSTI ID: 22116940
• Journal Information: AIP Conference Proceedings, Vol. 1523, Issue 1; Conference: DIFFRACTION 2012: International workshop on diffraction in high energy physics, Lanzarote, Canary Islands (Spain), 10-15 Sep 2012; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANTI DE SITTER SPACE
COMPTON EFFECT
CROSS SECTIONS
DUALITY
GAUGE INVARIANCE
GRAVITATION
GRAVITONS
HERA STORAGE RING
MOMENTUM TRANSFER
MULTIPARTICLE SPECTROMETERS
PARTICLE IDENTIFICATION
PARTICLE KINEMATICS
POMERANCHUK PARTICLES
QUANTUM FIELD THEORY
REGGE TRAJECTORIES
SPACE-TIME