Strong coupling constants and radiative decays of the heavy tensor mesons

Abstract

In this article, we analyze tensor-vector-pseudoscalar(TVP) type of vertices D_{2}^{*+}D^{+}rho , D_{2}^{*0}D^{0}rho , D_{2}^{*+}D^{+}omega , D_{2}^{*0}D^{0}omega , B_{2}^{*+}B^{+}rho , B_{2}^{*0}B^{0}rho , B_{2}^{*+}B^{+}omega , B_{2}^{*0}B^{0}omega , B_{s2}^{*}B_{s}phi and D_{s2}^{*}D_{s}phi 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.