Exotica possibility of new observations by BES
Abstract
Description
The employment of interpolating currents of existed studies of four-quark state and glueball with QCD sum rule approach is analyzed. In terms of suitable currents, the masses of the lowest lying scalar and pseudo-scalar glueball were determined. The masses of some tetraquark states and their first orbital excitations were obtained through a combination of the sum rule with the constituent quark model. Exotica possibility of the new observations by BES is discussed.
8 pages, talk given at XII International Conference on Hadron Spectroscopy(Hadron 07), Frascati, Rome, 8-13 October, 2007
8 pages, talk given at XII International Conference on Hadron Spectroscopy(Hadron 07), Frascati, Rome, 8-13 October, 2007