Hyperons and the H-particle in the color dielectric model

Nishikawa, K.; Aoki, Nobuaki; Hyuga, Hiroyuki

doi:10.1016/0375-9474(91)90462-f

Cited by 12 publications

(11 citation statements)

References 20 publications

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“…Several closely related versions of the CDM exist in the literature. They have been widely employed in the baryon sector, to calculate the static [27,28,29,30] and dynamic properties [31,32,33,34,35,36] of the nucleon and to describe strange baryons [28,37,38,39]. The CDM has also been applied in the quark sector, to calculate the EOS of quark matter [40,41,42,43,44] and to study the stability of strange quark matter [45].…”

Section: B the Color Dielectric Modelmentioning

confidence: 99%

Hybrid stars with the color dielectric and the MIT bag models

et al. 2004

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We study the hadron-quark phase transition in the interior of neutron stars (NS). For the hadronic sector, we use a microscopic equation of state (EOS) involving nucleons and hyperons derived within the Brueckner-Bethe-Goldstone many-body theory, with realistic two-body and three-body forces. For the description of quark matter, we employ both the MIT bag model with a density dependent bag constant, and the color dielectric model. We calculate the structure of NS interiors with the EOS comprising both phases, and we find that the NS maximum masses are never larger than 1.7 solar masses, no matter the model chosen for describing the pure quark phase.

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Section: B the Color Dielectric Modelmentioning

confidence: 99%

Hybrid stars with the color dielectric and the MIT bag models

et al. 2004

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“…We consider here the work by Aoki et al [26]: these authors solve self-consistently the mean field equations for quarks, color dielectric field and gluons, starting from a CDM Lagrangian with the Double Minimum potential (16) In order to reproduce the masses of the octet and decuplet baryons (in particular hyperons) the authors of Ref. [26] employ both the scaling model and the non-scaling one.…”

Section: Stability Of Strangelets In the Cdm: Imentioning

confidence: 99%

“…Strangeness fraction, experimental masses and theoretical masses of hyperons, according to the calculation of Ref. [26].…”

Section: Stability Of Strangelets In the Cdm: Imentioning

confidence: 99%

Stability of strange quark matter: MIT bag versus color dielectric model

2002

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We discuss the properties of strange matter, in particular the minimum of the energy per baryon number as a function of the strangeness fraction. We utilize both the MIT bag model and the Color Dielectric Model and compare the energy per baryon with the masses of hyperons having the corresponding strangeness fraction, which are coherently calculated within both models. We also take into account the perturbative exchange of gluons. The results obtained in the two approaches allow to discuss the stability of strangelets. While the MIT bag model and the double minimum version of the Color Dielectric Model allow the existence of strangelets, the single minimum version of the Color Dielectric Model excludes this possibility.

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“…The predicted binding energy of H dihyperon is about 80 MeV below the AA threshold. Since then many authors have investigated the stability of H dihyperon by means of bag model [2], Skyrme model [3], lattice QCD [4], non-relativistic quark model [5], colordielectric quark model [6] and flux tube quark model [7]. The predicted binding energies are strongly model dependent, and some authors insist no bound state.…”

Section: Introductionmentioning

confidence: 98%

Analysis of the3 He(K?,K +)n reaction by the potential quark model

Aizawa

Hirata

1992

Z. Physik A - Hadrons and Nuclei

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We analyze the production of H dihyperson (J~=0 +, S = -2) via the (K -, K +) reaction by means of the nonrelativistic quark model. First, the H mass and mass spectrum of single baryons are calculated. When the single baryon spectrum is well reproduced, the H dihyperson has the binding energies about 20 MeV or 60 MeV corresponding to the choice of the strength of the confinement potential. Using this model and parameters, cross sections for H production are estimated. A new effect, contributions from color-octet Q 3@ Q 3 components of H dihyperson, is taken into account. The cross sections for H production are enhanced about ten times by these contributions. The K +-neutron coincidence cross section for H production is found to be 99-115 nb/sr 2 at the K + forward direction for M H =2212 MeV and the K-beam momentum 1.8 GeV/c.

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Hyperons and the H-particle in the color dielectric model

Cited by 12 publications

References 20 publications

Hybrid stars with the color dielectric and the MIT bag models

Hybrid stars with the color dielectric and the MIT bag models

Stability of strange quark matter: MIT bag versus color dielectric model

Analysis of the3 He(K?,K +)n reaction by the potential quark model

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