Strange-quark mass effects in the Bs meson's light-cone distribution amplitude

被引：7

作者：

Feldmann, Thorsten ^{[1
]}

Lueghausen, Philip ^{[1
]}

Seitz, Nicolas ^{[1
]}

机构：

[1] Univ Siegen, Theoret Phys 1, Walter Flex Str 3, D-57068 Siegen, Germany

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2023年 / 2023卷 / 08期

关键词：

Bottom Quarks; Properties of Hadrons;

D O I：

10.1007/JHEP08(2023)075

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：

We investigate the differences between the light-cone distribution amplitudes (LCDAs) of B-s mesons and B-q mesons (with q = u, d) induced by a non-vanishing strange-quark mass m(s) & NOTEQUAL; 0 (compared to m(q) & SIME; 0). To this end, we consider the so-called "radiative tail" which is related to the short-distance expansion of the relevant light-ray operators in heavy-quark effective theory. We extend the calculation of the according matching coefficients, including operators linear in m(s) for both the leading and sub-leading 2-particle LCDAs. Based on a generic parameterization for the leading LCDA, we discuss the effect on its shape on a quantitative level, and compare our findings with recent results on the inverse moments of the B-q and B-s LCDAs from QCD sum rules.

引用

页数：24