Higher-twist effects in the direct photon production and the role of infrared renormalons
PHYSICAL REVIEW D, cilt.87, sa.1, 2013 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 87 Sayı: 1
- Basım Tarihi: 2013
- Doi Numarası: 10.1103/physrevd.87.014006
- Dergi Adı: PHYSICAL REVIEW D
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Karadeniz Teknik Üniversitesi Adresli: Evet
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