Logarithmic moments of B-meson quasidistribution amplitude

被引：2
作者：
Hu, Shu-Man [1 ]
Xu, Ji [1 ]
Zhao, Shuai [2 ]
机构：
[1] Zhengzhou Univ, Sch Phys & Microelect, Zhengzhou 450001, Henan, Peoples R China
[2] Tianjin Univ, Dept Phys, Tianjin 300350, Peoples R China
来源：
EUROPEAN PHYSICAL JOURNAL C | 2024年 / 84卷 / 05期
基金：
中国国家自然科学基金; 中国博士后科学基金;
关键词：
QCD FACTORIZATION; FORM-FACTORS; HEAVY; DECAYS;
D O I：
10.1140/epjc/s10052-024-12672-2
中图分类号：
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号：
摘要：
It was demonstrated that the lattice simulation of B-meson light-cone distribution amplitude (LCDA) is feasible via the quasi-distribution amplitude (quasi-DA) in large momentum effective theory (LaMET). The structures of logarithmic moments (LMs) of B-meson quasi-DA are explored in this work. The one-loop results indicate mixing in the matching: the n-th LM would be not only factorized into the n-th LM of LCDA, but also other moments with different power, accompanied by short distance coefficients. These results supply the understanding of the matching in LaMET and may provide guidance to the lattice study of LMs or other parameters of B-meson LCDA.
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页数：7
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