Matching the B-meson quasidistribution amplitude in the RI/MOM scheme

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

Automated summary

In this study, we derive the matching coefficient that connects the renormalized quasidistribution amplitude in the RI/MOM scheme and the standard LCDA in the MS scheme. Our numerical analysis verifies the feasibility of using the RI/MOM scheme for renormalizing the B-meson quasidistribution amplitude. These results are crucial for exploring the partonic structure of heavy-quark hadrons.