| In the framework of Regge phenomenology, masses of the charmed states cq|- (q=u,d,s)lying on the 13S1-like trajectories are estimated. The overall agreement between our estimated masses and the recent predictions gived by modified quark models is good. Masses of the observed charmed states Ds0(2317), DsJ(2860) and DsJ(2690)/DsJ(2700) can be reasonably reproduced in the picture of these charmed states as simple quark-antiquark configurations. We therefore suggest the Ds0(23l7) can be identified as the cs|- (13P0) state. The possibleassignments of the DsJ(2860) and DsJ (2690)/DSJ (2700) are discussed.Based on the main assumption that the a0(980) and Ds0(2317) belong to the 13P0 qq|- multiplet, the masses of the states belong to the 13P0 qq|-multiplet are estimated in the quasi-linear Regge trajectory ansatz. In the framework of meson-meson mixing, it is suggested that the a0(980),K0*(1052), f0(1099) and f0(530) constitute the ground scalar meson nonet, and that the f0(1099) is composed mostly of ss|- while the f0(530)is mainly uu|-+dd|-. It is supposed that these states would likely correspond to the observed scalar states a0(980),k(900),f0(980) and f0(600)/σ,respectively. Also, in the glueball-dominace picture, the mass of the ground scalar glueball is estimated to be about 1340MeV. The agreement between the present findings and those given by other different approaches is satisfactory. |
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