Abstract
Computations in the quenched approximation on the lattice predict the lightest glueball to be a scalar in the region. Here we calculate the dynamical effect the coupling to two pseudoscalars has on the mass, width, and decay pattern of such a scalar glueball. Modeling this nonperturbative interaction reveals that, if the pure glue state has a width to two pseudoscalars of as predicted on the lattice, the resulting hadron has a width to these channels of only with a large component. Experimental results need to be reanalyzed in light of these predictions to decide if either the or an coincides with this dressed glueball.
- Received 6 March 1997
DOI:https://doi.org/10.1103/PhysRevLett.79.1998
©1997 American Physical Society