Strong coupling constants and radiative decays of the heavy tensor mesons

In this article, we analyze tensor-vector-pseudoscalar(TVP) type of vertices $$D_{2}^{*+}D^{+}\rho $$D2∗+D+ρ, $$D_{2}^{*0}D^{0}\rho $$D2∗0D0ρ, $$D_{2}^{*+}D^{+}\omega $$D2∗+D+ω, $$D_{2}^{*0}D^{0}\omega $$D2∗0D0ω, $$B_{2}^{*+}B^{+}\rho $$B2∗+B+ρ, $$B_{2}^{*0}B^{0}\rho $$B2∗0B0ρ, $$B_{2}^{*+}B^{+}\omega $$B2∗+B+ω, $$B_{2}^{*0}B^{0}\omega $$B2∗0B0ω, $$B_{s2}^{*}B_{s}\phi $$Bs2∗Bsϕ and $$D_{s2}^{*}D_{s}\phi $$Ds2∗Dsϕ in the frame work of three point QCD sum rules(QCDSR). According to these analysis, we calculate their strong form factors which are used to fit into analytical functions of $$Q^{2}$$Q2. Then, we obtain the strong coupling constants by extrapolating these strong form factors into deep time-like regions. As an application of this work, the coupling constants for radiative decays of these heavy tensor mesons are also calculated at the point of $$Q^{2}=0$$Q2=0. With these coupling constants, we finally obtain the radiative decay widths of these tensor mesons.