Abstract
We estimate the strong coupling constants of charmed and bottom mesons $ D_{(s)}^* $, $ D_{(s)1} $, $ B_{(s)}^* $, and $ B_{(s)1} $ with light vector mesons $ \rho $, $ \omega $, $ K^* $, and $ \phi $ within the framework of light-cone QCD sum rules. We compare our estimations to the ones predicted by other approaches.
Highlights
Strong coupling constants between heavy and light mesons are among the essential ingredients for the description of low-energy hadron interactions
The operator product expansion (OPE) is carried out near the light cone, x2 ∼ 0, and the nonperturbative effects appear in the matrix elements of nonlocal operators, which are parametrized in terms of the light-cone distribution amplitudes (DAs) of the corresponding hadrons, instead of the vacuum condensates that appear in the standard sum rules method [3,4]
We present the dependence of the strong coupling constant g on the Borel mass parameter M2 for
Summary
Strong coupling constants between heavy and light mesons are among the essential ingredients for the description of low-energy hadron interactions. The light-cone sum rules (LCSR) [2] is a hybrid of the traditional sum rules method and the methods used in hard exclusive processes In this approach, the OPE is carried out near the light cone, x2 ∼ 0, and the nonperturbative effects appear in the matrix elements of nonlocal operators, which are parametrized in terms of the light-cone distribution amplitudes (DAs) of the corresponding hadrons, instead of the vacuum condensates that appear in the standard sum rules method [3,4]. The OPE is carried out near the light cone, x2 ∼ 0, and the nonperturbative effects appear in the matrix elements of nonlocal operators, which are parametrized in terms of the light-cone distribution amplitudes (DAs) of the corresponding hadrons, instead of the vacuum condensates that appear in the standard sum rules method [3,4] In this method, the OPE is carried over the twists of corresponding operators. To the best of our knowledge, many heavy-light meson vertices such as DÃsDÃK, Ds1D1KÃ [5], DÃDÃρ [6], DÃDπ, BÃBπ [7,8], DDρ [9], DÃDρ [10], DDJ=ψ [11], 2470-0010=2021=104(7)=074034(12)
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
