文章基本信息

标题：$K^0-\bar{K}^0$ mixing beyond the SM from $N_f=2$ tmQCD
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作者：P. Dimopoulos
期刊名称：PoS - Proceedings of Science
印刷版ISSN：1824-8039
出版年度：2010
卷号：2010
出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：We present preliminary results on the of neutral kaon oscillations in extensions of the Standard Model. Using Nf = 2 maximally twisted sea quarks and Osterwalder-Seiler valence quarks, we achieve both O(a)-improvement and continuum-like renormalization pattern for the relevant fourfermion operators. We perform simulations at three values of the lattice spacing and extrapolate/ interpolate our results to the continuum limit and physical light/strange quark mass. The calculation of the renormalization constants of the complete operator basis is performed nonperturbatively in the RI-MOM scheme.