Strong coupling constants and radiative decays of the heavy tensor mesons

In this article, we analyze tensor-vector-pseudoscalar(TVP) type of vertices D${}_2^{\text{â}\text{ˆ}\text{—}+}$D${}^{+}$ρ, D${}_2^{\text{â}\text{ˆ}\text{—}0}$D${}^0$ρ, D${}_2^{\text{â}\text{ˆ}\text{—}+}$D${}^{+}$ω, D${}_2^{\text{â}\text{ˆ}\text{—}0}$D${}^0$ω, B${}_2^{\text{â}\text{ˆ}\text{—}+}$B${}^{+}$ρ, B${}_2^{\text{â}\text{ˆ}\text{—}0}$B${}^0$ρ, B${}_2^{\text{â}\text{ˆ}\text{—}+}$B${}^{+}$ω, B${}_2^{\text{â}\text{ˆ}\text{—}0}$B${}^0$ω, B${}_{s2}^{\text{â}\text{ˆ}\text{—}}$B${}_s$ϕ and D${}_{s2}^{\text{â}\text{ˆ}\text{—}}$D${}_s$ϕ 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${}^2$. 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. With these coupling constants, we finally obtain the radiative decay widths of these tensor mesons.