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arXiv 1312.7693hep-lat
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双味格点量子色动力学计算的粲夸克质量和D介子衰变常数

Charm quark mass and D-meson decay constants from two-flavour lattice QCD

Jochen Heitger, Georg M. von Hippel, Stefan Schaefer, Francesco Virotta

摘要:

本文计算了含O(a)非微扰改进的Wilson夸克的双味格点量子色动力学中的粲夸克质量和轻子D介子衰变常数fD和f_{D_s}。我们的分析是基于CLS组态在两个晶格间距(a=0.065和0.048 fm,其中晶格尺度由fK设置)和π介子质量范围下降到~ 190 MeV,L* mpi> 4,为了执行控制连续谱和手征外推与小的系统不确定性。

英文摘要:

We present a computation of the charm quark's mass and the leptonic D-meson decay constants f_D and f_{D_s} in two-flavour lattice QCD with non-perturbatively O(a) improved Wilson quarks. Our analysis is based on the CLS configurations at two lattice spacings (a=0.065 and 0.048 fm, where the lattice scale is set by f_K) and pion masses ranging down to ~ 190 MeV at L*m_pi > 4, in order to perform controlled continuum and chiral extrapolations with small systematic uncertainties.

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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