Direct Photon Production in Pion-Proton Collisions
24th International Conference on Integrable Systems and Quantum Symmetries (ISQS), Prague, Czech Republic, 14 - 18 June 2016, vol.804, (Full Text)
- Publication Type: Conference Paper / Full Text
- Volume: 804
- Doi Number: 10.1088/1742-6596/804/1/012001
- City: Prague
- Country: Czech Republic
- Karadeniz Technical University Affiliated: Yes
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.