文章基本信息

标题：Mass effect on the photon structure functions
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作者：N. Watanabe
期刊名称：PoS - Proceedings of Science
印刷版ISSN：1824-8039
出版年度：2011
卷号：2011
期号：RADCOR2011
出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：I discuss the one-gluon-exchange (aas) corrections to the four real photon structure functions Fg 2 (x;Q2), Fg L (x;Q2), gg1 (x;Q2) and Wg 3 (x;Q2) in the massive parton model. A technique based on the Cutkosky rules and the reduction of Feynman integrals to master integrals are employed. Except for Fg L , the NLO contributions are noticeable at large x and do not vanish at xmax which corresponds to the threshold of the massive quark pair production due to the Coulomb singularity. It is found that the first moment sum rule of gg1 is satisfied up to the NLO.