Relativistic corrections to light-cone distribution amplitudes of S-wave Bc mesons and heavy quarkonia

• DOI: 10.1007/jhep12(2017)012
• Publication Date: 2017-12-02T11:07:42Z
• Authors: Wei Wang; Ji Xu; Deshan Yang; Shuai Zhao
• Keywords: B meson

In collinear factorization, light-cone distribution amplitudes (LCDAs) are key ingredients to calculate the production rate of a hadron in high energy exclusive processes. For doubly-heavy meson system (such as B c , J/ψ, Y etc), LCDAs contain perturbative scales that can be integrated out and then re-factorized into products perturbatively calculable parts non-relativistic QCD matrix elements. this re-factorization scheme, known at next-to-leading order strong coupling constant α s leading velocity expansion. work, we $$ \mathcal{O}\left({v}^2\right) corrections twist-2 S-wave mesons. These results applicable heavy quarkonia like η c,b J/ψ by setting m b = . We apply these relativistically corrected study their inverse moments few Gegenbauer which important for phenomenological study. point relativistic sizable, comparable with radiative corrections. useful future theoretical analyses productions