Real Compton Scattering via Color Dipoles

Abstract

We study photoabsorption reaction and real Compton scattering (RCS) within the color dipole model. We rely on a photon wave function derived in the instanton vacuum model, and on the energy dependent phenomenological elastic dipole amplitude. Data for the photoabsorption cross section at high energies agree with our parameter free calculations. We also provide predictions for the differential RCS cross section. Although no data for small angle Compton scattering are available so far, this process can be measured in ultra-peripheral hadronic and nuclear collisions at the LHC.

9 pages, 4 figures. Some statements clarified, bibliographic inaccuracy corrected

References in corpus (7)

• The Physics of Ultraperipheral Collisions at the LHC
• Azimuthal anisotropy of direct photons
• Azimuthal Asymmetry of pions in pp and pA collisions
• Compton Scattering Cross Section on the Proton at High Momentum Transfer
• Low energy constants of \chiPT from the instanton vacuum model
• Damping of forward neutrons in pp collisions
• DVCS via color dipoles: Nonperturbative effects