Nucleon等位向量标量与张量电荷的精确确定
高能物理 - 格点
2026-03-03 v3 高能物理 - 唯象学
摘要
我们报告了使用最近提出的“blending”方法对Nucleon等位向量电荷 的高精度计算。该方法提供了对全到全费米子传播器的高精度随机估计。通过将当前算子乘以传统的Nucleon插值子,我们创建了一个新算子,捕获主要的激发态污染。该新算子与传统Nucleon插值子的线性组合减少了这些激发态并提高了多状态拟合的鲁棒性。使用覆盖5个格子间距、5种相同quark质量和格子间距但多个体积的15个 lattice ensembles,其中包括3个物理夸克质量,我们报告了迄今为止最精确的lattice QCD预测 and at 2~GeV, with the systematic uncertainties from continuum, infinite volume, chiral extrapolations, excited state contamination and also renormalization.
引用
@article{arxiv.2511.02326,
title = {Precision determination of nucleon iso-vector scalar and tensor charges at the physical point},
author = {Ji-Hao Wang and Zhi-Cheng Hu and Xiangdong Ji and Xiangyu Jiang and Yushan Su and Peng Sun and Yi-Bo Yang},
journal= {arXiv preprint arXiv:2511.02326},
year = {2026}
}
备注
26 pages, 22 figures. Add the discussion on the cost comparison, autocorrelation and fit window sensitivities