Possible interpretation of the newly observed state
Abstract
Inspired by the newly observed $Ω (2012)$ state at Belle II, we investigate the two-body strong decays of $Ω$ baryons up to $N = 2$ shell within the chiral quark model. Our results indicate that (i) the newly observed $Ω (2012)$ state could be assigned to the spin-parity $J^P = 3 / 2^-$ state |$$70,^{2}10, 1, 1, \frac{3^-}{2}$$$\rangle$$ and the experimental data can be reasonably described. However, the spin-parity $J^P = 1 / 2^-$ state |$$70,^{2}10, 1, 1, \frac{1^-}{2}$$$\rangle$$ and spin-parity $J^P = 3 / 2^+$ state |$$56, ^{4}10, 2, 0, \frac{3^+}{2}$$$\rangle$$ cannot be completely excluded. (ii) The $D$-wave states in the $N = 2$ shell are most likely to be narrow states with a width of dozens of MeV and have a good potential to be observed in the $$\Xi$$K$ and/or $$\Xi(1530)K$$ channels in future experiments. The $Ω(2250)$ resonance listed in PDG may be a good candidate for the $J^P$ = $5/2^+$ $1D$ wave state |$56$,$$^{4}10$$, $2, 2$, $5/2^+$ $$\rangle$$ .
- Authors:
-
- Peking Univ., Beijing (China). School of Physics, State Key Lab. of Nuclear Physics. Center of High Energy Physics
- Hunan Normal Univ,, Changsha (China). Dept. of Physics, Key Lab. of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education, Synergetic Innovation Center for Quantum Effects and Applications (SICQEA)
- Publication Date:
- Research Org.:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC)
- Sponsoring Org.:
- USDOE Office of Science (SC)
- OSTI Identifier:
- 1544236
- Grant/Contract Number:
- 11775078; 2017M620492
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review D
- Additional Journal Information:
- Journal Volume: 98; Journal Issue: 3; Journal ID: ISSN 2470-0010
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
Citation Formats
Xiao, Li-Ye, and Zhong, Xian-Hui. Possible interpretation of the newly observed Ω(2012) state. United States: N. p., 2018.
Web. doi:10.1103/PhysRevD.98.034004.
Xiao, Li-Ye, & Zhong, Xian-Hui. Possible interpretation of the newly observed Ω(2012) state. United States. https://doi.org/10.1103/PhysRevD.98.034004
Xiao, Li-Ye, and Zhong, Xian-Hui. Fri .
"Possible interpretation of the newly observed Ω(2012) state". United States. https://doi.org/10.1103/PhysRevD.98.034004. https://www.osti.gov/servlets/purl/1544236.
@article{osti_1544236,
title = {Possible interpretation of the newly observed Ω(2012) state},
author = {Xiao, Li-Ye and Zhong, Xian-Hui},
abstractNote = {Inspired by the newly observed $Ω (2012)$ state at Belle II, we investigate the two-body strong decays of $Ω$ baryons up to $N = 2$ shell within the chiral quark model. Our results indicate that (i) the newly observed $Ω (2012)$ state could be assigned to the spin-parity $J^P = 3 / 2^-$ state |$70,^{2}10, 1, 1, \frac{3^-}{2}$$\rangle$ and the experimental data can be reasonably described. However, the spin-parity $J^P = 1 / 2^-$ state |$70,^{2}10, 1, 1, \frac{1^-}{2}$$\rangle$ and spin-parity $J^P = 3 / 2^+$ state |$56, ^{4}10, 2, 0, \frac{3^+}{2}$$\rangle$ cannot be completely excluded. (ii) The $D$-wave states in the $N = 2$ shell are most likely to be narrow states with a width of dozens of MeV and have a good potential to be observed in the $\Xi$$K$ and/or $\Xi(1530)K$ channels in future experiments. The $Ω(2250)$ resonance listed in PDG may be a good candidate for the $J^P$ = $5/2^+$ $1D$ wave state |$56$,$^{4}10$, $2, 2$, $5/2^+$ $\rangle$ .},
doi = {10.1103/PhysRevD.98.034004},
journal = {Physical Review D},
number = 3,
volume = 98,
place = {United States},
year = {2018},
month = {8}
}
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