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- Title
Strange-quark mass effects in the B<sub>s</sub> meson's light-cone distribution amplitude.
- Authors
Feldmann, Thorsten; Lüghausen, Philip; Seitz, Nicolas
- Abstract
We investigate the differences between the light-cone distribution amplitudes (LCDAs) of Bs mesons and Bq mesons (with q = u, d) induced by a non-vanishing strange-quark mass ms ≠ 0 (compared to mq ≃ 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 ms 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 Bq and Bs LCDAs from QCD sum rules.
- Subjects
LINEAR operators; MESONS; QUANTUM chromodynamics
- Publication
Journal of High Energy Physics, 2023, Vol 2023, Issue 8, p1
- ISSN
1126-6708
- Publication type
Article
- DOI
10.1007/JHEP08(2023)075