Year: 2000
Type: article
Abstract: The spectra of some ${0}^{++}$ four-quark states, which are composed of $\overline{q}q$ pairs, are calculated in QCD. The light four-quark states are calculated using the traditional sum rules while four-quark states containing one heavy quark are computed in HQET. For constructing the interpolating currents, different couplings of the color and spin inside the $\overline{q}q$ pair are taken into account. It is found that the spin and color combination has little effect on the mass of the four-quark states.
Author: Ailin Zhang
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W1973971835