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

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.

21 pages, 15 figures. arXiv admin note: text overlap with arXiv:0709.2072 by other authors

References in corpus (8)

• Light-Front Dynamics and AdS/QCD Correspondence: The Pion Form Factor in the Space- and Time-Like Regions
• Meson wave function from holographic models
• Infrared features of unquenched finite temperature lattice Landau gauge QCD
• Higher Twist Effects in Proton-Proton Collisions
• Infrared renormalons and single meson production in proton-proton collisions
• Single Meson Production in Photon-Photon Collisions and Infrared Renormalons
• Higher Twist Effects in Photon-Photon Collisions
• The Meson Production in Proton-Proton Collisions in Next-To-Leading Order and Infrared Renormalons

Cited by in corpus (4)

• Inclusive Gluon Production in Pion-Proton Collisions and the Principle Maximum Conformality Renormalization Scale
• The inclusive production of charged pion pairs in proton-antiproton collisions
• Direct ${\rho }_L$ meson production in proton-proton and proton-antiproton collisions
• Higher-twist mechanism and inclusive gluon production in pion-proton collisions