文章基本信息

标题：Non-perturbative scale evolution of four-fermion operators in two-flavour QCD
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作者：G. Herdoiza
期刊名称：PoS - Proceedings of Science
印刷版ISSN：1824-8039
出版年度：2006
出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：We apply nite-size recursion techniques based on the Schrödinger functional formalism to determine the renormalization group running of four-fermion operators which appear in the DS = 2 effective weak Hamiltonian of the Standard Model. Our calculations are done using O(a) improvedWilson fermions with Nf = 2 dynamical avours. Preliminary results are presented for the four-fermion operator which determines the BK-parameter in tmQCD.