论文标题
使用晶状体QCD朝物理点的核子形式的连续限制
Towards the continuum limit of nucleon form factors at the physical point using lattice QCD
论文作者
论文摘要
我们介绍了从2+1风味晶格QCD在物理点获得的核心轴向电荷和根平方（RMS）半径的结果，其空间范围约为10 fm。我们的计算是通过PACS110量规配置与PACS合作生成的，该配置与六个Stout-Smeared $ O（a）$改进的Wilson-Clover Quark Action和Iwasaki Gauge Action和Iwasaki Gauge Action $β$ = 1.82和2.00相对应，对应于0.085 fm和0.085 fm和0.063 fm的Lattice间距。我们首先评估$ g_a/g_v $的值，该值未在连续限制中重新归一致，因此最终以重新归一化的轴向电荷。此外，我们还计算了核子弹性形式因子，并确定了两个晶格间距处的三种异卵器RMS RADII，例如电气，磁性和轴向。我们最终讨论了对轴向电荷的离散不确定性和针对连续性极限的ISOVECTOR RMS RADII。
We present results for the axial charge and root-mean-square (RMS) radii of the nucleon obtained from 2+1 flavor lattice QCD at the physical point with a large spatial extent of about 10 fm. Our calculations are performed with the PACS10 gauge configurations generated by the PACS Collaboration with the six stout-smeared $O(a)$ improved Wilson-clover quark action and Iwasaki gauge action at $β$ = 1.82 and 2.00 corresponding to lattice spacings of 0.085 fm and 0.063 fm respectively. We first evaluate the value of $g_A/g_V$ , which is not renormalized in the continuum limit and thus ends up with the renormalized axial charge. Moreover, we also calculate the nucleon elastic form factors and determine three kinds of isovector RMS radii such as electric, magnetic and axial ones at the two lattice spacings. We finally discuss the discretization uncertainties on renormalized axial charge and isovector RMS radii towards the continuum limit.
