Deeply Virtual Compton Scattering from Gauge/Gravity Duality

Abstract

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. Using conformal Regge theory we review the form of the amplitude for pomeron exchange, both at strong and weak 't Hooft coupling. 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.

48 pages, 10 figures; typos fixed, several clarifying remarks added

References in corpus (23)

• The Pomeron and Gauge/String Duality
• Eikonal Approximation in AdS/CFT: Conformal Partial Waves and Finite N Four-Point Functions
• Photon impact factor in the next-to-leading order
• Saturation in Deep Inelastic Scattering from AdS/CFT
• Eikonal Methods in AdS/CFT: Regge Theory and Multi-Reggeon Exchange
• NLO evolution of color dipoles in N=4 SYM
• String-Gauge Dual Description of Deep Inelastic Scattering at Small-$x$
• On AdS/QCD correspondence and the partonic picture of deep inelastic scattering
• DIS on a Large Nucleus in AdS/CFT
• Introduction to Gauge/Gravity Duality
• Deep inelastic scattering from gauge string duality in the soft wall model
• Deep inelastic structure functions from supergravity at small x
• Polarized DIS in N=4 SYM: Where is spin at strong coupling?
• High Energy Scattering in the AdS/CFT Correspondence
• Using HERA Data to Determine the Infrared Behaviour of the BFKL Amplitude
• Polarized Deep Inelastic and Elastic Scattering From Gauge/String Duality
• Deep inelastic scattering from gauge string duality in D3-D7 brane model
• Deep inelastic scattering for vector mesons in holographic D4-D8 model
• Deep Inelastic Scattering from Holographic Spin-One Hadrons
• Deep inelastic scattering of baryons in a modified soft wall model
• Conformal kernel for NLO BFKL equation in $\mathcal{N}$=4 SYM
• Exclusive diffractive production of real photons and vector mesons in a factorized Regge-pole model with non-linear Pomeron trajectory
• Saturation and Confinement: Analyticity, Unitarity and AdS/CFT Correspondence

Cited by in corpus (29)

• Light-Front Holographic QCD and Emerging Confinement
• Conformal Regge theory
• 50 Years of Quantum Chromodynamics
• Holographic $J/\psi$ production near threshold and the proton mass problem
• BFKL evolution and the growth with energy of exclusive J/Psi and Upsilon photo-production cross-sections
• Gluon matter distribution in the proton and pion from extended holographic light-front QCD
• Vector meson production at low x from gauge/gravity duality
• Soft Pomeron in Holographic QCD
• Transverse charge and magnetization densities in holographic QCD
• Longitudinal momentum densities in transverse plane for nucleons
• Regge theory in a Holographic dual of QCD in the Veneziano Limit
• Deep inelastic scattering from polarized spin-$1/2$ hadrons at low $x$ from string theory
• Unity of pomerons from gauge/string duality
• Form factors and transverse charge and magnetization densities in the hard-wall AdS/QCD model
• Inclusive Production Through AdS/CFT
• Polarized gluon distribution in the proton from holographic light-front QCD
• Minkowski Conformal Blocks and the Regge Limit for SYK-like Models
• Non-minimal coupling contribution to DIS at low $x$ in Holographic QCD
• Nucleon to $\Delta$ transition form factors and empirical transverse charge densities
• Conformal Pomeron and Odderon in Strong Coupling
• Towards holographic QCD: AdS/CFT, confinement deformation, and DIS at small-x
• Higher-twist fermionic operators and DIS structure functions from the AdS/CFT duality
• N=4 SYM model for soft interactions at high energy
• Holographic Approach to Deep Inelastic Scattering at Small-x at High Energy
• Diffractive and deeply virtual Compton scattering in holographic QCD
• Deeply Virtual Compton Scattering in Improved Holographic QCD
• Deeply Virtual Compton Scattering and Higgs Production Using the Pomeron in AdS
• Diffractive vector meson production at HERA using holographic AdS/QCD wavefunctions
• Exploring Nucleon Structure and the Proton Mass Problem through Holographic QCD