A higher-twist modified parton evolution equation is used to evolve the initial valence quark distributions in pions, which are derived based on light-front quantization via BLFQ collaboration. The results are consistent with the valence quark distributions of the E615 experiment, and the pion structure function of the H1 experiment. The structure function data highlight the necessity for a higher-twist modification in the small x region. Comparisons with some other models are also given.

中文翻译：

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Pion Parton 分布中的高扭曲效应

使用更高扭曲修正的部分子演化方程来演化π介子中的初始价夸克分布，该分布是基于光波前量子化通过 BLFQ 协作推导出的。结果与E615实验的价夸克分布和H1实验的π介子结构函数一致。结构函数数据强调了在小x区域进行更高扭曲修改的必要性。还给出了与其他一些模型的比较。