Higher-twist effects in the direct photon production and the role of infrared renormalons

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Atıf İçin Kopyala

Ahmadov A. I. , AYDIN C. , UZUN Ö.

PHYSICAL REVIEW D, cilt.87, 2013 (SCI İndekslerine Giren Dergi)

• Cilt numarası: 87 Konu: 1
• Basım Tarihi: 2013
• Doi Numarası: 10.1103/physrevd.87.014006
• Dergi Adı: PHYSICAL REVIEW D

Özet

We calculate the contribution of the higher-twist effects to the large-p(T) inclusive single direct photon production cross section in pi p collisions in the running coupling and frozen coupling approaches within holographic QCD. We obtain the structure of infrared renormalon singularities of the higher-twist subprocess cross section. For a full analysis 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. DOI: 10.1103/PhysRevD.87.014006