2008/11/14 by J. Hejbal, Jiri Hejbal
Mathematics · Physics and Astronomy · #Advanced Mathematical Identities #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph
paper · pdf · doi:10.1088/0954-3899/36/5/055001
published as J.Phys.G36:055001,2009 · 25 pages
arxiv created 2008/11/14 · openalex publication_date 2009/03/30 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
The alternative approach to QCD analysis of the photon structure function F2γ is presented. It differs from the conventional one by the presence of the terms which in conventional approach appear in higher orders. We show that this difference concerns also the photonic parton distribution functions. In the alternative approach, the complete LO analysis of F2γ can be performed as all required quantities are known. At the NLO, however, one of the coefficient function is so far not available and thus only the photonic parton distribution function can be computed and compared to those of standard approach. We discuss the numerical difference of these approaches at the LO and the NLO approximation and show that in case of F2γ this difference is non-negligible and may play an important role in the analysis on photon data of the future experiments.