Strangeness—2 and—3 baryons in a quark model with chromodynamics

Chao, Kuang-Ta; Isgur, Nathan; Karl, Gabriel

doi:10.1103/physrevd.23.155

Cited by 114 publications

(151 citation statements)

References 14 publications

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“…Since the predicted mass of the Ω − in the relativistic quark model [8] well agrees with the experimental measurement in PDG [1], we adopt the predicted masses of the Ω resonances from Ref. [8] (see Table I) in our calculation.…”

Section: Results and Analysismentioning

confidence: 93%

“…In Ref. [8], their masses were predicted to be about 2.19 GeV and 2.06 GeV [8], respectively. Using these predicted masses, we calculate their partial and total strong decay widths.…”

Section: B 2s Wave States In the N = 2 Shellmentioning

confidence: 99%

“…In various models and methods, such as the Skyrme model [3], quark model [4][5][6][7][8][9][10][11][12][13], lattice gauge theory [14,15] and so on [16][17][18][19][20][21], the masses of the first orbital excitations of Ωð1672Þ are predicted to be ∼2.0 GeV. Thus, the newly observed Ωð2012Þ may be a good candidate for the first orbital (1P) excitations of Ωð1672Þ.…”

Section: Introductionmentioning

confidence: 99%

“…In Ref. [8], the mass of 2S state (the first radially excitation of Ωð1672Þ) with J P ¼ 3=2 þ was predicted to be 2065 MeV, which is also close to the mass of Ωð2012Þ. To further determine the spin-parity quantum numbers and inner structure of Ωð2012Þ, besides its mass one should study its other properties, such as magnetic moments, radiative and strong decays properties, as well.…”

Section: Introductionmentioning

confidence: 99%

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Possible interpretation of the newly observed Ω(2012) state

Xiao

Zhong

2018

Phys. Rev. D

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Inspired by the newly observed Ωð2012Þ state at Belle II, we investigate the two-body strong decays of Ω baryons up to N ¼ 2 shell within the chiral quark model. Our results indicate that (i) the newly observed Ωð2012Þ state could be assigned to the spin-parity J P ¼ 3=2 − state j70; 2 10; 1; 1; 3 2 − i and the experimental data can be reasonably described. However, the spin-parity J P ¼ 1=2 − state j70; 2 10; 1; 1; 1 2 − i and spin-parity J P ¼ 3=2 þ state j56; 4 10; 2; 0; 3 2 þ i cannot be completely excluded.(ii) The D-wave states in the N ¼ 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 ΞK and/or Ξð1530ÞK channels in future experiments. The Ωð2250Þ resonance listed in PDG may be a good candidate for the J P ¼ 5=2 þ 1D wave state j56; 4 10; 2; 2; 5=2 þ i.

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Section: Results and Analysismentioning

confidence: 93%

“…In Ref. [8], their masses were predicted to be about 2.19 GeV and 2.06 GeV [8], respectively. Using these predicted masses, we calculate their partial and total strong decay widths.…”

Section: B 2s Wave States In the N = 2 Shellmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Possible interpretation of the newly observed Ω(2012) state

Xiao

Zhong

2018

Phys. Rev. D

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“…By applying these three-quark and five-quark transitions in the Hamiltonian matrix, the lowest excitation of Ω is predicted to be around 1780 MeV with 3 2 − . This result is very different from the prediction of the quenched model where the lowest Ω * is around 2020 MeV with relative angular momentum L=1 [54]. On the other hand, if only with the five-quark components, the lowest Ω * was predicted around 1820 MeV [55], and Ref.…”

Section: Lowest ω * Within Sss ↔ Sssqqmentioning

confidence: 62%

Penta-Quark States with Strangeness, Hidden Charm and Beauty

Wu¹,

Zou²

2016

Proceedings of the 10th International Workshop on the Physics of Excited Nucleons (NSTAR2015)

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The classical quenched quark models with three constituent quarks provide a good description for the baryon spatial ground states, but fail to reproduce the spectrum of baryon excited states. More and more evidences suggest that unquenched effects with multi-quark dynamics are necessary ingredients to solve the problem. Several new hyperon resonances reported recently could fit in the picture of penta-quark states. Based on this picture, some new hyperon excited states were predicted to exist; meanwhile with extension from strangeness to charm and beauty, super-heavy narrow N * and Λ * resonances with hidden charm or beauty were predicted to be around 4.3 and 11 GeV, respectively. Recently, two of such N * with hidden charm might have been observed by the LHCb experiment. More of those states are expected to be observed in near future. This opens a new window in order to study hadronic dynamics for the multi-quark states.

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