skip to main content

Title: Deeply virtual Compton scattering from gauge/gravity duality

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.
Authors:
;  [1]
  1. University of Porto (Portugal)
Publication Date:
OSTI Identifier:
22116940
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1523; Journal 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)
Country of Publication:
United States
Language:
English
Subject:
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