Abstract
The -wave and states with isospin and spin are dynamically investigated within the framework of a chiral constituent quark model by solving a resonating group method equation. The results show that the interaction between and is attractive, which consequently results in a bound state with a binding energy of about MeV, unlike the case of the state, which has a repulsive interaction and thus is unbound. The channel-coupling effect of and is found to be negligible owing to the fact that the gap between the and thresholds is relatively large and the and transition interaction is weak.
- Received 2 January 2011
DOI:https://doi.org/10.1103/PhysRevC.84.015203
©2011 American Physical Society