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标题：Determining the low energy parameters of Wilson Chiral Perturbation Theory
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作者：S. Aoki ; O. Bar
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 report preliminary results of a Wilson Chiral Perturbation Theory (WChPT) analysis of twisted mass lattice QCD data. The quenched data, previously published by two different groups, was generatedwith two definitions for the critical quarkmass and shows a strong non-linear quark mass dependence for small quark masses for the pion mass definition (“bending phenomenon”). We find that WChPT describes this characteristic curvature fairly well. Fits to the data provide estimates for combinations of low-energy parameters, even though the errors are sizable.