Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10722225 | Physics Letters B | 2009 | 6 Pages |
Abstract
We investigate direct photon production in pp collisions at the energies of RHIC, CDF and LHC, at different rapidities employing various color-dipole models. The cross section peaks at forward rapidities due to the Abelian dynamics of photon radiation. This opens new opportunities for measurement of direct photons at forward rapidities, where the background from radiative hadronic decays is strongly suppressed. Our model calculations show that photon production is sensitive to the gluon saturation effects, and strongly depends on the value of the anomalous dimension.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Nuclear and High Energy Physics
Authors
B.Z. Kopeliovich, E. Levin, A.H. Rezaeian, Ivan Schmidt,