XXV DAE-BRNS High Energy Physics Symposium 2022

Spin-parity assignment and decay property of Ωb baryon

15 Dec 2022, 14:00

1h

IISER Mohali

Poster Poster - 3

Speaker

AMEE KAKADIYA

Description

In 2020, there are four narrow states of ${\mathrm{\Omega }}_b$ baryon listed by Particle Data Group (PDG) \cite{PDG}, having one-star status, which have no confirmed $J^p$ value. The resonance masses are: ${\mathrm{\Omega }}_b(6315{)}^{-}$, ${\mathrm{\Omega }}_b(6330{)}^{-}$, ${\mathrm{\Omega }}_b(6340{)}^{-}$, and ${\mathrm{\Omega }}_b(6350{)}^{-}$. Using the hypercentral approach, we enumerated masses of the excited states of ${\mathrm{\Omega }}_b$ baryon. In Hypercentral Constituent Quark Model (hCQM), the screening potential is employed as confining potential with color-Coulomb potential. We determine the possible $J^p$ values for these four newly observed ${\mathrm{\Omega }}_b$ states and compared them with results obtained by other theoretical approaches. Furthermore, the properties of ${\mathrm{\Omega }}_b$ baryon have been studied. The ground state magnetic moment (spin $\frac{1}{2}$ and $\frac{3}{2}$), transition magnetic moment, radiative decay width and strong decay width are calculated using the enumerated mass spectra.

References:
1. R.L. Workman et al. (Particle Data Group), Prog. Theor. Exp. Phys. 2022, 083C01 (2022).
2. LHCb collaboration, (R. Aaij et. al.), Phys.Rev.Lett. {\bf 124} 8, 082002 (2020).
3. D. Jia, J. H. Pan, C. Q. Pang, {\it Eur. Phys. J. C} {\bf 81}, 434 (2021).
4. Zalak Shah, Amee Kakadiya, Keval Gandhi and Ajay Kumar Rai, Properties of Doubly Heavy Baryons, \textit{Universe} \textbf{7}, 337 (2021).
5. Amee Kakadiya, Zalak Shah, Keval Gandhi and Ajay Kumar Rai, Few-Body Syst. 63, 29 (2022).
6. Amee Kakadiya, Zalak Shah and Ajay Kumar Rai, International Journal of Modern Physics A \textbf{37}, No. 11n12, 2250053 (2022).