标题： π介子光锥波函数的二阶矩 显示英文标题

标题： The Second Moment of the Pion Light Cone Wave Function

摘要： 我们给出了π子光锥波函数二阶矩的一个初步结果。 这个参数是理论预测（来自格点和求和规则）与最近的实验结果（出乎意料地与纯微扰预测一致）之间存在分歧的主题。 在本工作中，我们利用格点超立方对称性来消除幂次发散，并且还对所有贡献算符实现了完整的1-loop匹配。 显示英文摘要

摘要： We present a preliminary result for second moment of the light cone wave function of the pion. This parameter is the subject of a discrepancy between theoretical predictions (coming from lattice and sum rules) and a recent experimental result (that remarkably agrees with purely perturbative predictions). In this work we exploit lattice hypercubic symmetries to remove power divergences and, moreover, implement a full 1-loop matching for all the contributing operators.