Meson wave functions from holographic QCD and the role of infrared renormalons in proton-proton collisions


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Ahmadov A. I. , AYDIN C., KESKIN F.

ANNALS OF PHYSICS, vol.327, no.6, pp.1472-1483, 2012 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 327 Issue: 6
  • Publication Date: 2012
  • Doi Number: 10.1016/j.aop.2012.02.008
  • Journal Name: ANNALS OF PHYSICS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.1472-1483
  • Keywords: Higher twist, Holographic QCD, Infrared renormalons, QUANTUM CHROMODYNAMICS, EXCLUSIVE PROCESSES, ORDER
  • Karadeniz Technical University Affiliated: Yes

Abstract

We calculate the contribution of the higher-twist Feynman diagrams to the large-p(T) inclusive pion production cross section in proton-proton collisions in the cases of the running and frozen coupling approaches within holographic QCD. The structure of the infrared renormalon singularities of the higher-twist subprocess cross section and its resummed expression are found. We compare the resummed higher-twist cross sections with the ones obtained in the framework of the frozen coupling approximation and the leading-twist cross section. We discuss the phenomenological consequences of possible higher-twist contributions to the pion production in proton-proton collisions within holographic QCD. (C) 2012 Elsevier Inc. All rights reserved.