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arXiv · 1202.2632

Pion wave functions from holographic QCD and the role of infrared renormalons in photon-photon collisions

A. I. Ahmadov·C. Aydin·F. Keskin
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Abstract

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.

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A. I. Ahmadov, C. Aydin, F. Keskin. 2012-02-13. Pion wave functions from holographic QCD and the role of infrared renormalons in photon-photon collisions. https://doi.org/10.1103/physrevd.85.034009

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