Citation Link: https://doi.org/10.1007/jhep08(2023)075
Strange-quark mass effects in the Bs meson’s light-cone distribution amplitude
Publication Type
Article
Subjects
Physics
PArticle physics
Light cone
Meson
B meson
Quantum chromodynamics
Amplitude
Quark
Inverse
Distribution (mathematics)
Radiative transfer
Bottom quark
Top quark
Quantum mechanics
Geometry
Date Issued
2023
Abstract
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 ≠ 0 (compared to m q ≃ 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.
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