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, Çek Cumhuriyeti, 14 - 18 Haziran 2016, cilt.804 identifier identifier


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.