Direct photons at forward rapidities in high-energy pp collisions

B. Z. Kopeliovich, E. Levin, A. H. Rezaeian*, Ivan Schmidt

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

27 Scopus citations


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.

Original languageEnglish
Pages (from-to)190-195
Number of pages6
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Issue number2
StatePublished - 11 May 2009


FundersFunder number
Foundation for Basic Research of the Russian Federation
Deutsche ForschungsgemeinschaftPI182/3-1
United States-Israel Binational Science Foundation20004019
Comisión Nacional de Investigación Científica y TecnológicaPSD-91-2006
Fondo Nacional de Desarrollo Científico y Tecnológico1070517, 1050589
Ministry of Culture and Sport


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