标题： 在静态轻子衰变常数中寻找手征对数 显示英文标题

标题： Searching for chiral logs in the static-light decay constant

摘要： 使用未冻结QCD中的三叶草费米子作用量，介子质量低至420 MeV，我们寻找静态-轻夸克衰变常数中的手征对数的证据。如果使用Eichten和Hill的原始静态理论，有一些证据表明存在手征对数项。然而，ALPHA合作组的静态作用量的更精确数据并未显示出静态-轻夸克衰变常数与轻夸克质量之间存在非线性依赖关系。我们对介子衰变常数的手征微扰理论与静态-轻夸克介子之间的联系做一些评论。 显示英文摘要

摘要： Using the clover fermion action in unquenched QCD with pion masses as low as 420 MeV, we look for evidence for chiral logs in the static-light decay constant. There is some evidence for a chiral log term, if the original static theory of Eichten and Hill is used. However, the more precise data from the static action of the ALPHA collaboration do not show any evidence for non-linear dependence of the static-light decay constant on the light quark mass. We make some comments on the connection between chiral perturbation theory for decay constants of the pion and static-light meson.