Direct Photon Production in Pion-Proton Collisions


Ahmadov A. I. , Aydin C. , Uzun O.

24th International Conference on Integrable Systems and Quantum Symmetries (ISQS), Prague, Czech Republic, 14 - 18 June 2016, vol.804 identifier identifier

Abstract

In this article we calculate the contribution of the higher-twist Feynman diagrams to the large-PT inclusive single direct photon production cross section in pi p collisions in case of the running coupling and frozen coupling approaches within holographic QCD. We determined the structure of infrared renormalon singularities of the higher-twist subprocess cross section. Also compared and analyzed the resummed higher-twist cross sections with the ones obtained in the framework of the frozen coupling approach.