论文标题
在RI/MOM方案中匹配B-Meson准分裂幅度
Matching the B-meson quasidistribution amplitude in the RI/MOM scheme
论文作者
论文摘要
在大动量有效理论（lamet）的框架内，可以通过通过硬性分解分解公式的晶格计算来从晶格计算中提取$ b $ - 米斯森的轻锥分布幅度（HQET）。该准词性可以在非正规化的动量减法方案（RI/MOM）中重新归一化。在这项工作中，我们得出了匹配系数，该系数连接了RI/MOM方案中的重新归一化的准屈服振幅，并以一环准确度连接了$ \ overline {\ textrm {ms}} $方案中的$ \ overline {\ textrm {ms}} $方案。我们的数值分析批准了RI/MOM计划对重新归一化的$ B $ -Meson准分裂振幅的可行性。这些结果对于探索重夸克·哈德子的党派结构至关重要。
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 $\overline{\textrm{MS}}$ 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.
