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arXiv · 2308.13977

Accessing the subleading-twist $B$-meson light-cone distribution amplitude with Large-Momentum Effective Theory

Shu-Man Hu·Wei Wang·Ji Xu·Shuai Zhao
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Abstract

Within the framework of large momentum effective theory (LaMET), we propose a hard-collinear factorization formula to extract the subleading-twist $B$-meson light-cone distribution amplitude (LCDA) from the quasidistribution amplitude calculated on the lattice. The one-loop matching coefficient and an integro-differential equation governing the evolution of the quasidistribution amplitude are derived. Our results could be useful either in evaluating the subleading-twist $B$-meson LCDA on the lattice or in the understanding the feasibility of LaMET on higher-twist distributions.

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Shu-Man Hu, Wei Wang, Ji Xu, Shuai Zhao. 2023-08-27. Accessing the subleading-twist $B$-meson light-cone distribution amplitude with Large-Momentum Effective Theory. https://arxiv.org/abs/2308.13977

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