Regular Article - Theoretical Physics
A study of hidden-color channel on the strangeness dibaryon
Department of Physics, Liaoning Normal University, 116029, Dalian, China
2 School of Science, Huzhou University, 313000, Huzhou, Zhejiang, China
Accepted: 8 October 2022
Published online: 20 October 2022
In theoretical studies of the baryon baryon interaction, dibaryons states are obtained some times. A WASA-at-COSY experiment suggests that one such state might have been observed in the fusion reaction, although there are alternative explanations for this peak. We predicted prior to that experiment a possible Delta Delta bound state, that could play a role in that reaction. Also we found that the hidden-color (CC) channel plays an important role in the binding behavior of the Delta Delta system. In the present work, we will extend the theoretical investigation to another interesting dibaryon candidate with strangeness for further understanding the role of the hidden-color channel. The state with isospin and spin is dynamically investigated within the framework of chiral SU(3) quark model by solving a resonating group method (RGM) equation. The results show that the can become bound state with a binding energy of about and the corresponding root-mean-square (RMS) in the single-channel () calculation, and would become and in the coupled-channel (-CC) calculation, respectively. The hidden-color channel makes an increment of about to the binding energy and the RMS decreases from to , it clearly shows that is a -CC deeply bound and compact state, where the coupling to the CC channel plays a significant role. The present work is significant for our further understanding the effect of the hidden-color channel on some other interesting dibaryon candidates with strangeness.
© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2022. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.