Investigation of 
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mi>q</mml:mi><mml:mi>q</mml:mi><mml:mi>q</mml:mi><mml:mi>s</mml:mi><mml:mover><mml:mi>q</mml:mi><mml:mo>¯</mml:mo></mml:mover></mml:mrow></mml:math>
 pentaquarks in a chiral quark model

Qin, L.; Tan, Y. X.; Hu, Xiaohuang; Ping, J. L.

doi:10.1103/physrevc.103.015203

Cited by 5 publications

(4 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In a chiral quark model, it was also supported that the Λ(1405) state was aK N bound state and had the two-pole structure in Ref. [61]. Whereas, in the Skyrme model, the Λ(1405) state was assumed to be a narrowK N Feshbach resonance in Ref.…”

Section: Introductionmentioning

confidence: 76%

Is two-pole’s $$\varLambda (1405)$$ one state or two?

2021

View full text Add to dashboard Cite

To understand the nature of two poles for the $$\varLambda (1405)$$ Λ ( 1405 ) state, we revisit the interactions of $${\bar{K}}N$$ K ¯ N and $$\pi \Sigma $$ π Σ with their coupled channels, where two-pole structure is found in the second Riemann sheet. We also dynamically generate two poles in the single channel interaction of $${\bar{K}}N$$ K ¯ N and $$\pi \Sigma $$ π Σ , respectively. Moreover, we make a further study of two poles’ properties by evaluating the couplings, the compositeness, the wave functions, and the radii for the interactions of four coupled channels, two coupled channels and the single channel. Our results show that the nature of two poles is unique. The higher-mass pole is a pure $${\bar{K}} N$$ K ¯ N molecule, and the lower-mass one is a composite state of mainly $$\pi \Sigma $$ π Σ with tiny component $${\bar{K}} N$$ K ¯ N . From our results, one can conclude that the $$\varLambda (1405)$$ Λ ( 1405 ) state may be overlapped with two different states of the same quantum numbers.

show abstract

Section: Introductionmentioning

confidence: 76%

Is two-pole’s $$\varLambda (1405)$$ one state or two?

2021

View full text Add to dashboard Cite

show abstract

“…Different from the molecular picture where the five quarks are separated into two parts, a three-quark cluster and a quark-antiquark cluster [60], the q sq 3 ¯pentaquark states are studied in the compact pentaquark picture in this work. In SU(3) F symmetry, q 3 s are treated as four identical quarks following S 4 permutation symmetry.…”

Section: Pentaquark Components In Negative-parity λ Resonancesmentioning

confidence: 99%

A possible interpretation of Λ baryon spectrum with pentaquark components

Kaewsnod

Zhao

et al. 2023

J. Phys. G: Nucl. Part. Phys.

View full text Add to dashboard Cite

The Λ baryon spectrum is studied within the SU(3) flavor symmetry in a constituent quark model. We found that it is rather difficult to accommodate some negative-parity Λ resonances as single q2s (q = u,d quarks) states in the conventional three-quark picture. The ground q3s \bar q pentaquark mass spectrum is evaluated and a possible interpretation is proposed in the work: the observed Λ(1405)1/2-, Λ(1670)1/2- and Λ(1800)1/2- are three-state mixtures of two p-wave q2 s states and one ground q3s \bar q pentaquark state, so are the Λ(1520)3/2-, Λ(1690)3/2- and Λ(2050)3/2- resonances.

show abstract

“…The quark model (QM) is a powerful model for studying the properties of hadrons [26][27][28][29][30]. And the various types of decays provide a better understanding of hadrons.…”

Section: Theoretical Frameworkmentioning

confidence: 99%

The strong decay of higher vector $$\Upsilon$$(11020) state in the framework of non-relativistic quark model

et al. 2023

View full text Add to dashboard Cite

An analytical study of a source of Beauty mesons (B mesons) by the Strong decay of $$\Upsilon$$ Υ (11020) is performed to obtain various modes of B mesons. The non-relativistic quark model framework is used to predict the masses of the bottomonium mesons. The strong decay of the $$\Upsilon$$ Υ (11020) state is calculated utilizing Quark Pair Creation model. In addition, the branching ratio of the strong decay has been calculated for each decay width and using them to estimate the number of B-meson pairs for each strong decay width. The results show reasonable agreement with recent Particle Data Group data, in particular with the total strong decay width of $$\Upsilon$$ Υ (11020). The $$\Upsilon$$ Υ (11020) particle is expected to be a good candidate for the conventional $$\Upsilon$$ Υ (6S) state and provides both types of strange and non-strange B mesons. We found new conclusions for the strong decay widths of the $$\Upsilon$$ Υ (11020) in the relativistic phase space. The strong width of the $$B^{*}B^{*}$$ B ∗ B ∗ channel is predicted to be the highest width by the ratio ($$\cong 51\%$$ ≅ 51 % ) concerning higher vector $$\Upsilon$$ Υ (11020) State. In addition, the specific $$B_{s}B_{s}^{*}$$ B s B s ∗ channel is expected to be the highest width relative to higher $$\Upsilon$$ Υ resonances.

show abstract

Investigation of qqqsq¯ pentaquarks in a chiral quark model

Cited by 5 publications

References 41 publications

Is two-pole’s $$\varLambda (1405)$$ one state or two?

Is two-pole’s $$\varLambda (1405)$$ one state or two?

A possible interpretation of Λ baryon spectrum with pentaquark components

The strong decay of higher vector $$\Upsilon$$(11020) state in the framework of non-relativistic quark model

Contact Info

Product

Resources

About