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arXiv 0810.2443hep-lat
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从Nf=2 tmQCD计算K介子矢量和张量衰变常数及BK参数

K-meson vector and tensor decay constants and BK-parameter from Nf=2 tmQCD

P. Dimopoulos, R. Frezzotti, V. Gimenez, V. Lubicz, F. Mescia, G. C. Rossi, S. Simula, A. Vladikas

摘要:

我们目前的工作进展的K介子矢量和张量衰变常数的计算,以及在K介子振荡的B参数。我们的模拟是在一个部分淬火的设置,两个动力学(海)威尔逊夸克的味道,具有最大扭曲的质量项。价夸克可以是标准夸克,也可以是Osterwalder-Seiler最大扭曲夸克。这两个正则化可以适当地组合,以获得一个BK参数,这是乘法重正化和O(a)的改善。

英文摘要:

We present work in progress on the computation of the K-meson vector and tensor decay constants, as well as the B-parameter in Kaon oscillations. Our simulations are performed in a partially quenched setup, with two dynamical (sea) Wilson quark flavours, having a maximally twisted mass term. Valence quarks are either of the standard or the Osterwalder-Seiler maximally twisted variety. These two regularizations can be suitably combined in order to obtain a BK parameter which is both multiplicatively renormalizable and O(a) improved.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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