论文标题
从2+1味的动力域壁壁QCD的等分子核子形式因素在物理质量上
Isovector nucleon form factors from 2+1-flavor dynamical domain-wall lattice QCD at the physical mass
论文作者
论文摘要
报道了在2+1味的域壁壁系集合上计算出的，据报道，在物理质量和晶格切断时，奇怪的和堕落的夸克，$ a^{ - 1} $，约为1.730（4）GEV。该合奏由RBC和UKQCD合作共同生产，空间范围为48a $或约5.5 fm。形式是与LHP协作合作计算的。形式因子的形状参数，例如向量齐平均平方半径，$ \ langle r_1^2 \ rangle $或异常的磁矩，$ f_2（0）$似乎比相应的费用更少依赖于可能的激发污染物。初步估计是$ \ langle r_1^2 \ rangle \ sim 0.142（13）\，\ mbox {fm}^2 $和$ f_2（0）\ sim 3.22（8）$。
Nucleon isovector form factors calculated on a 2+1-flavor domain-wall-fermions ensemble with strange and degenerate up and down quarks at physical mass and lattice cut off, $a^{-1}$, of about 1.730(4) GeV, are reported. The ensemble was generated jointly by RBC and UKQCD collaborations with a spatial extent of $48a$ or about 5.5 fm. The form factors are calculated in collaboration with LHP collaboration as well. The resulting shape parameters of the form factors, such as vector-charge mean squared radius, $\langle r_1^2\rangle$, or anomalous magnetic moment, $F_2(0)$ appear less dependent on possible excited-state contaminations than the corresponding charges. Preliminary estimates are $\langle r_1^2\rangle \sim 0.142(13)\, \mbox{fm}^2$ and $F_2(0) \sim 3.22(8)$.
