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arXiv 1012.3355hep-lathep-ph
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从Nf=2 tmQCD的K^0-SM以外的\bar{K}^0混合

K^0-\bar{K}^0 Mixing Beyond the SM from Nf=2 tmQCD

ETM Collaboration, P. Dimopoulos, R. Frezzotti, V. Gimenez, V. Lubicz, G. Martinelli, F. Mescia, M. Papinutto, G. C. Rossi, S. Simula, A. Vladikas

摘要:

本文给出了在标准模型推广下中性K介子振荡的初步结果。利用Nf=2的最大扭曲海夸克和Osterwalder-Seiler价夸克,我们得到了相应四费米子算符的O(a)-改进和类连续重整化模式.我们进行模拟在三个值的晶格间距和外推/内插我们的结果的连续极限和物理光/奇怪的夸克质量。完全算符基的重正化常数的计算在RI-RNN方案中非微扰地进行。

英文摘要:

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 four-fermion 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 non- perturbatively in the RI-MOM scheme.

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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