文章基本信息

标题：Two-loop massive fermionic operator matrix elements and initial state QED corrections to $e^+ e^- \rightarrow \gamma^* / Z^*$
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作者：A. De Freitas ; J. Bluemlein
期刊名称：PoS - Proceedings of Science
印刷版ISSN：1824-8039
出版年度：2007
出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：We describe the calculation of the two–loop operator matrix elements for massive external fermions. These matrix elements are needed for the calculation of the O(a2) initial state radiative corrections to e+e− annihilation into a neutral virtual gauge boson, based on the renormalization group technique.