Matching lattice and continuum axial-vector and vector currents with nonrelativistic QCD and highly improved staggered quarks

Matching lattice and continuum axial-vector and vector currents with nonrelativistic QCD and highly improved staggered quarks
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将晶格和连续轴向矢量和矢量电流与非相对论 QCD 和高度改进的交错夸克相匹配

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发表时间:
2012
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通讯作者:
R. Horgan
R. Horgan
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文献类型:
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作者:
C. Monahan;J. Shigemitsu;R. Horgan

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在微扰理论中,我们将连续统和晶格轴矢量流和矢量流匹配在一个回路上。对于重夸克,我们使用非相对论性QCD(NRQCD)作用量,对于轻夸克,我们使用高度改进的交错夸克(HISQ)作用量。我们目前的结果为无质量和大质量的HISQ夸克和匹配过程的一部分,我们包括一个循环的HISQ重整化参数的讨论。
We match the continuum and lattice axial-vector and vector currents at one loop in perturbation theory. For the heavy quarks we use the nonrelativistic QCD (NRQCD) action and for the light quarks the highly improved staggered quark (HISQ) action. We present results for both massless and massive HISQ quarks and as part of the matching procedure we include a discussion of the one loop HISQ renormalization parameters.