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arXiv 0909.3187hep-lathep-ph
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关于流格的B-物理的一个建议

A proposal for B-physics on current lattices

ETM collaboration, B. Blossier, P. Dimopoulos, R. Frezzotti, G. Herdoiza, K. Jansen, V. Lubicz, G. Martinelli, C. Michael, G. C. Rossi, A. Shindler, S. Simula, … 展开作者

ETM collaboration, B. Blossier, P. Dimopoulos, R. Frezzotti, G. Herdoiza, K. Jansen, V. Lubicz, G. Martinelli, C. Michael, G. C. Rossi, A. Shindler, S. Simula, C. Tarantino, C. Urbach

摘要:

本文提出了一种从现有的晶格数据中提取B夸克物理参数(b夸克质量和fB、fBs衰变常数)的方法,并对该方法进行了检验。该方法是基于这样的想法,即分别构建适当的重轻介子质量和衰变常数的比率,拥有精确已知的静态极限,并在魅力周围的各种重夸克质量对对其进行评估。通过一个光滑的插值在重夸克质量从容易接近的魅力区域的渐近点,B-物理参数的计算与百分之几(统计+系统)的误差使用最近产生的Nf=2最大扭曲威尔逊费米子数据。

英文摘要:

A method to extract B-physics parameters (b-quark mass and fB, fBs decay constants) from currently available lattice data is presented and tested. The approach is based on the idea of constructing appropriate ratios of heavy-light meson masses and decay constants, respectively, possessing a precisely known static limit, and evaluating them at various pairs of heavy quark masses around the charm. Via a smooth interpolation in the heavy quark mass from the easily accessible charm region to the asymptotic point, B-physics parameters are computed with a few percent (statistical + systematic) error using recently produced Nf=2 maximally twisted Wilson fermions data.

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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