Bilinear quark operator renormalization at generalized symmetric point
Bilinear quark operator renormalization at generalized symmetric point
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DOI：
10.1103/physrevd.93.065031
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发表时间：
2016-02
影响因子：
5
通讯作者：
J. M. Bell;J. Gracey
中科院分区：
文献类型：
--
作者：
J. M. Bell;J. Gracey
我们计算了双圈广义动量位形的绿色函数。这些都需要协助格点规范理论测量相同的数量在匹配的高能量行为。味非单重算子考虑的标量，矢量和张量流，以及二阶矩的扭曲-2威尔逊算子用于深度非弹性散射的核子结构函数的测量。
We compute Green's functions with a bilinear quark operator inserted at non-zero momentum for a generalized momentum configuration to two loops. These are required to assist lattice gauge theory measurements of the same quantity in matching to the high energy behaviour. The flavour non-singlet operators considered are the scalar, vector and tensor currents as well as the second moment of the twist-2 Wilson operator used in deep inelastic scattering for the measurement of nucleon structure functions.