标题： 核子 \$g_A/g_V\$ 的畴壁费米子计算 显示英文标题

标题： Domain wall fermion calculation of nucleon g_A/g_V

摘要： 我们展示了关于核子的同位旋矢量和轴向电荷 g_V 和 g_A 的初步的域墙费米子格点QCD计算结果。由于流的格点重整化常数 Z_V 和 Z_A 在DWF中是相同的，格点比值 (g_A/g_V)^{格子}直接给出了连续理论值。确实，从矢量流矩阵元确定的 Z_V 与来自夸克双线性非微扰重整化研究的 Z_A 非常一致。我们还得到了与自旋相关的量 Delta-q/g_V 和 delta-q/g_V。 显示英文摘要

摘要： We present a preliminary domain-wall fermion lattice-QCD calculation of isovector vector and axial charges, g_V and g_A, of the nucleon. Since the lattice renormalizations, Z_V and Z_A, of the currents are identical with DWF, the lattice ratio (g_A/g_V)^{lattice} directly yields the continuum value. Indeed Z_V determined from the matrix element of the vector current agrees closely with Z_A from a non-perturbative renormalization study of quark bilinears. We also obtain spin related quantities Delta-q/g_V and delta-q/g_V.