Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2012-02-13
Phys. Rev. D85, 034009, 2012
Physics
High Energy Physics
High Energy Physics - Phenomenology
21 pages, 15 figures. arXiv admin note: text overlap with arXiv:0709.2072 by other authors
Scientific paper
In this article, we calculate the contribution of the higher-twist Feynman diagrams to the large-$p_T$ inclusive single pion production cross section in photon-photon collisions in case of the running coupling and frozen coupling approaches within holographic QCD. We compare the resummed higher-twist cross sections with the ones obtained in the framework of the frozen coupling approach and leading-twist cross section. Also, we show that in the context of frozen coupling approach a higher-twist contribution to the photon-photon collisions cross section is normalized in terms of the pion electromagnetic form factor.
Ahmadov Azar I.
Aydin Cemal
Keskin F.
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