Matching the B-meson quasidistribution amplitude in the RI/MOM scheme
Abstract
Within the framework of large momentum effective theory (LaMET), the light-cone distribution amplitude of B-meson in heavy-quark effective theory (HQET) can be extracted from lattice calculations of quasidistribution amplitude through hard-collinear factorization formula. This quasiquantity can be renormalized in a regularization-independent momentum subtraction scheme (RI/MOM). In this work, we derive the matching coefficient which connects the renormalized quasiditribution amplitude in the RI/MOM scheme and standard LCDA in the MS scheme at one-loop accuracy. Our numerical analysis approves of the feasibility of RI/MOM scheme for renormalizing B-meson quasidistribution amplitude. These results will be crucial for exploring the partonic structure of heavy-quark hadrons.
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