文章基本信息

标题：Four quark operators in maximally twisted Wilson LQCD
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作者：R. Frezzotti ; G. Rossi
期刊名称：PoS - Proceedings of Science
印刷版ISSN：1824-8039
出版年度：2005
卷号：2005
出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：We discuss how the peculiar properties of maximally twistedWilson fermions can be exploited to set up a consistent LQCD computational scheme in which the CP-conserving matrix elements of the DS = 1;2 effective weak Hamiltonian can be evaluated without mixing with wrong-chirality and/or -parity operators. The proposed lattice framework guarantees automatic O(a) improvement and positive determinant also for pairs of non-degenerate quarks.