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.