文章基本信息

标题：Weak low-energy couplings from topological zero-mode wavefunctions
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作者：P. Hernandez
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 discuss a new method to determine the low-energy couplings of the DS = 1 weak Hamiltonian in the e -regime. It relies on a matching of the topological poles in 1/m2 of three-point functions of two pseudoscalar densities and a four-fermion operator computed in lattice QCD, to the same observables in the Chiral Effective Theory. We present the results of a NLO computation in chiral perturbation theory of these correlation functions together with some preliminary numerical results.