标题： $Δ^+$的部分子分布函数 显示英文标题

标题： Parton distribution functions of $Δ^+$ on the lattice

摘要： 我们展示了与未极化的准分布函数相关的归一化矩阵元的结果，利用大动量有效理论研究了$\Delta^+$重子。 分析了两种包含 clover 项的$N_f=2+1+1$扭转质量费米子簇集，其介子质量分别为 250 MeV 和 330 MeV。 我们采用动量平滑方法显著提高与增强的$\Delta$状态的重叠，从而显著减少二点和三点函数的统计误差。 显示英文摘要

摘要： We present results for renormalized matrix elements related to the unpolarized quasi-distribution function of the $\Delta^+$ baryon making use of the large momentum effective theory. Two ensembles of $N_f=2+1+1$ twisted mass fermions with a clover term and pion masses of 250 MeV and 330 MeV are analyzed. We employ momentum smearing to improve the overlap with the boosted $\Delta$ state significantly reducing in this way the statistical error of both two- and three-point functions.