Interpretation of the newly discovered $\Omega$(2012)
2018
Very recently Belle Collaboration reported observation of a narrow state called $\Omega(2012)$ with mass [$2012.4 \pm 0.7$~(stat)~$\pm 0.6$(syst)]~MeV and width [$6.4^{+2.5}_{-2.0}$~(stat)~$\pm 1.6$~(syst)]~MeV. We calculate the mass and residue of $\Omega(2012)$ state by employing the QCD sum rule method. Comparison of the obtained results with the experimental data allows us to interpret this state as $1P$ orbital excitation of the ground state $\Omega$ baryon, i.e. with quantum numbers $J^P=\frac{3}{2}^-$.
Keywords:
- Correction
- Source
- Cite
- Save
- Machine Reading By IdeaReader
23
References
29
Citations
NaN
KQI