Light and strange baryons in a chiral quark model with goldstone-boson-exchange interactions

The extended quark delocalization color screening model, which incorporates Goldstone–boson-exchange with soft cutoff, and chiral quark model are employed to do a systematic dynamical calculation of six-quark systems with strangeness. The two models give similar results, although they have different attraction mechanisms. Comparing with the previous calculation of the extended quark delocalization color screening model, in which the Goldstone–bosons are introduced with hard cutoff, the present calculation obtains a little large binding energies for most of the states. However, the conclusions are the same. The calculations show that NΩ state with IJ = 1/2, 2 is a good dibaryon candidate with narrow width, and ΩΩ state with IJ = 00 is a stable dibaryon against the strong interaction. The calculations also reveal several other possible dibaryon candidates with high angular momentum, ΔΣ*(1/2, 3), ΔΞ*(1, 3), etc. These states may have too wide width to be observed experimentally.

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WHICH CONSTITUENT QUARK MODEL IS BETTER?

Modern Physics Letters A ◽

10.1142/s021773230301048x ◽

2003 ◽

Vol 18 (02n06) ◽

pp. 356-361 ◽

Cited By ~ 9

Author(s):

FAN WANG ◽

JIA-LUN PING ◽

HOU-RONG PANG ◽

T. GOLDMAN

Keyword(s):

Comparative Study ◽

Quark Model ◽

Hybrid Model ◽

Constituent Quark ◽

Goldstone Boson ◽

Constituent Quark Model ◽

Exchange Model ◽

Meson Exchange ◽

Boson Exchange ◽

Quark Models

A comparative study has heen done by calculating the effective baryon-baryon interactions of the 64 lowest channels consisting of octet and decuplet baryons with three constituent quark models: the extended quark gluon exchange model, the Goldstone boson exchange model and the quark gluon meson exchange hybrid model. We find that these three models give similar results for 44 channels. Further tests of these models are discussed.

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Study of Heavy Strange Baryons in a Hypercentral Quark Model

International Journal of Modern Physics Conference Series ◽

10.1142/s2010194518600376 ◽

2018 ◽

Vol 46 ◽

pp. 1860037 ◽

Cited By ~ 1

Author(s):

Zahra Ghalenovi

Keyword(s):

Quark Model ◽

Radiative Decay ◽

Goldstone Boson ◽

Constituent Quark Model ◽

Baryon Spectrum ◽

Heavy Baryons ◽

Boson Exchange ◽

Charm Baryons ◽

The One ◽

Three Body

In this work, we study the properties of the heavy baryons with strangeness employing a constituent quark model in the hypercentral approach. The potential model considers the interactions arising the one-gluon exchange, Goldstone boson exchange and confinement, aspects of underlying theory, quantum chromodynamics (QCD). By solving three-body Schrodinger equation of baryonic system, we obtain the ground as well as the corresponding energy eigenvalues of the system. Using the obtained energies, we calculate the baryon spectrum. We extend our scheme to predict the radiative decay width of the charm baryons. A comparison of our results with those of other works and experimental data is also presented.

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