A Study of Excited ${\Omega }_b^{-}$ States in Hypercentral Constituent Quark Model via Artificial Neural Network

Abstract

In this work, we have obtained mass spectra, radiative decay widths and strong decay widths of newly observed excited ${\Omega }_b^{-}$ states, i.e. ${\Omega }_b(6316{)}^{-}$, ${\Omega }_b(6330{)}^{-}$, ${\Omega }_b(6340{)}^{-}$, and ${\Omega }_b(6350{)}^{-}$. Mass spectrum is obtained in Hypercentral Constituent Quark Model (hCQM) by solving six-dimensional nonrelativistic Schrödinger equation via Artificila Neural Network (ANN). In this respect, radiative decay widhts are calculated by a generalization of a framework from meson to baryon. Also, strong decay widths of the low-lying ${\Omega }_b$ states within ${}^3{P}_0$ model are calculated. Obtained results are presented with the comparison of available experimental data and other theoretical studies.

Comments: 9 pages, 3 tables, 3 figures; slight modifications on the text, numerical results revised, main conclusions unchanged