Evasion of HSR in the charmless decays of excited P-wave charmonia

Abstract

We investigate the charmless decays of excited P-wave charmonia chi _{c1}^prime rightarrow VV and chi _{c2}^prime rightarrow VP via intermediate charmed meson loops, where V and P denote the light vector and pseudoscalar mesons, respectively. Within the model parameters, the charmed meson loop contributions are evaluated by using the effective Lagrangian approach. For chi _{c1}^prime rightarrow VV, the partial widths of the rho rho , omega omega , and K^*{bar{K}}^* channels can reach to the order of MeV, while the partial width of the phi phi channel is very small and in the order of keV. For chi _{c2}^prime rightarrow V P, the partial widths of chi _{c2}^{prime } rightarrow K^*bar{K}+c.c turns out to be sizeable, while the partial widths of chi _{c2}^{prime } rightarrow rho ^+pi ^- +c.c is found to be much smaller than the K^*bar{K}+c.c channel. Our calculations may be examined by the future BESIII experiments.