从格点量子色动力学得到的粲偶素和D粒子的精确物理和粲夸克质量的测定
Precision charmonium and D physics from lattice QCD and determination of the charm quark mass
摘要：
我将描述最近的结果，从HPQCD合作使用一个新的非常精确的方法在格点量子色动力学的魅力夸克，我们已经使用的计算，包括充分的影响，u，d和s海夸克。晶格间距和u、d、s海夸克质量的多个值使我们能够可靠地外推到真实世界，并具有完整的误差预算。这为精确的格点量子色动力学测试开辟了粲物理学的领域。到目前为止，我们已经计算出D和D_s介子的质量为6 MeV，并从eta_c介子中确定了粲夸克的质量。我们的D和D_s衰减常数（确定为2%），使一个有趣的比较CLEO-c的结果，因为我们等待改进的实验误差。我们也能够确定的粲夸克质量的准确度为1%，使用粲偶素和高阶连续QCD微扰理论。未来的计算进行了简要讨论。
英文摘要：
I will describe recent results from the HPQCD collaboration using a new very accurate method for charm quarks in lattice QCD, that we have used in calculations including the full effect of u, d and s sea quarks. Multiple values of the lattice spacing and of the u, d and s sea quark masses allow us to extrapolate reliably, with a full error budget, to the real world. This opens up the field of charm physics to precision lattice QCD tests. So far we have calculated the D and D_s meson masses to 6 MeV, having fixed the charm quark mass from the eta_c meson. Our D and D_s decay constants (determined to 2%) make an interesting comparison to CLEO-c results as we await improved experimental errors. We are also able to determine the charm quark mass to an accuracy of 1% using charmonium correlators and high-order continuum QCD perturbation theory. Future calculations are briefly discussed.
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