夸克质量:从PDMATHAAB到${\rm \overline{MS}}$方案的N3LO桥
Quark masses: N3LO bridge from ${\rm RI/SMOM}$ to ${\rm \overline{MS}}$ scheme
摘要:
我们解析地计算了最小减法(${\rm \overline{MS}}$)和正则化不变对称动量减法(${\rm RI/SMOM}$)方案中重正化夸克质量之间关系的三圈修正。我们的结果在朗道规范中是有效的,并可用于减少格点确定${\rm \overline{MS}}$夸克质量的不确定性。
英文摘要:
We analytically compute the three-loop corrections to the relation between the renormalized quark masses defined in the minimal-subtraction (${\rm \overline{MS}}$) and the regularization-invariant symmetric momentum-subtraction (${\rm RI/SMOM}$) schemes. Our result is valid in the Landau gauge and can be used to reduce the uncertainty in a lattice determination of the ${\rm \overline{MS}}$ quark masses.
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