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arXiv 0710.0413hep-lat
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Delta B = 2和Delta C =2矩阵元的手征行为

Chiral behaviour of Delta B = 2 and Delta C =2 matrix elements

William Detmold, C. -J. David Lin

摘要:

研究了Delta B = 2和Delta C = 2四费米子算符矩阵元的光夸克质量和空间体积依赖性。这些运算符与标准模型内外的中性B和D混合相关。本工作的一个重要结论是,在标准模型外的重轻介子混合矩阵元的手征外推比在标准模型内的手征外推更为复杂。

英文摘要:

We investigate the light-quark mass and spatial volume dependence of matrix elements of Delta B = 2 and Delta C = 2 four-fermion operators. These operators are relevant for Neutral B(s) and D mixing in and beyond the Standard Model. An important conclusion of this work is that the chiral extrapolations for matrix elements of heavy-light meson mixing beyond the Standard Model are more complicated than that for the Standard Model mixing matrix elements.

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