<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mi>Θ</mml:mi><mml:mrow><mml:mo>+</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math>hypernuclei in relativistic mean-field model

Zhong, X.; Tan, Yu-Hong; Peng, Guang-Xiong; Li, Luyu; Ning, Puqi

doi:10.1103/physrevc.71.015206

Cited by 11 publications

(19 citation statements)

References 44 publications

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“…In Ref. [9], the Θ + hypernuclei were studied by using the RMF model with the Θ + couplings, g Θ σ = 4 3 g σ and g Θ ω = 4 3 g ω , which are the quark model predictions close to those given in the quark-meson coupling (QMC) model. It may be helpful to look at the case of Λ hypernuclei, because of the similarity of the Θ + hypernuclei and Λ hypernuclei.…”

Section: Numerical Resultsmentioning

confidence: 99%

“…5 It is interesting and important to compare the results of the QMF model with those obtained by other groups [7,9], and discuss the origin of the differences in the Θ + single-particle energies. More bound states of the Θ + in nuclei were predicted in some recent works [7,9]. In Ref.…”

Section: Numerical Resultsmentioning

confidence: 99%

“…This is considered as the dominant origin of the differences between the predictions given by the QMF model and those obtained in the RMF model [9].…”

Section: Numerical Resultsmentioning

confidence: 99%

“…There are several interesting theoretical works to study the pentaquark in nuclear medium [5,6,7,8,9]. In Ref.…”

Section: Introductionmentioning

confidence: 99%

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PentaquarkΘ+in nuclear matter andΘ+hypernuclei

Shen

Toki

2005

Phys. Rev. C

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We study the properties of the Θ + in nuclear matter and Θ + hypernuclei within the quark mean-field (QMF) model, which has been successfully used for the description of ordinary nuclei and Λ hypernuclei. With the assumption that the non-strange mesons couple only to the u and d quarks inside baryons, a sizable attractive potential of the Θ + in nuclear matter is achieved as a consequence of the cancellation between the attractive scalar potential and the repulsive vector potential. We investigate the Θ + single-particle energies in light, medium, and heavy nuclei. More bound states are obtained in Θ + hypernuclei in comparison with those in Λ hypernuclei.

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Section: Numerical Resultsmentioning

confidence: 99%

Section: Numerical Resultsmentioning

confidence: 99%

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PentaquarkΘ+in nuclear matter andΘ+hypernuclei

Shen

Toki

2005

Phys. Rev. C

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“…In recent months many works have been dedicated to the calculation of pentaquark properties [4][5][6][7][8], a theoretical pioneer work is the one that classified a narrow strange pentaquark with positive parity as the lowest state of an SU(3) decuplet within a chiral soliton model [9].…”

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confidence: 99%

Pentaquarks in the medium in the quark-meson coupling model

2005

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Strange and heavy flavoured hypernuclei in chiral soliton models

Kopeliovicha

Shunderuk

Proceedings of the IX International Conference on Hypernuclear and Strange Particle Physics

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Abstract. The extention of the chiral soliton approach to hypernuclei -strange or heavy flavoured -becomes more reliable due to success in describing of other properties of nuclei, e.g. the symmetry energy of nuclei with atomic numbers up to ∼ 30. The binding energies of the ground states of light hypernuclei with S = −1 have been described in qualitative agreement with data. The existence of charmed or beautiful hypernuclei and Theta-hypernuclei (strange, charmed or beautiful) with large binding energy is expected within same approach. -PACS. 12.39. Dc , 21.60.Ev, 21.80.+a, 1 Main features of the chiral soliton approach.The chiral soliton approach (CSA) is based on few principles and ingredients incorporated in the truncated effective chiral lagrangian:or U ∈ SU (3)-unitary matrix depending on chiral fields, m π is the pion mass, F π -pion decay constant, e -the only parameter of the model.The soliton (skyrmion) is coherent configuration of classical chiral fields, possessing topological charge (or winding number) identified with the baryon number B (Skyrme, 1961). Important simplifying feature of this approach is that configurations with different baryon, or atomic numbers are considered on equal footing, when zero modes only are taken into account in the quantization procedure. Another feature is that baryons individuality is absent within the multiskyrmion, and can be recovered -as it is believed -due to careful consideration of the nonzero modes.The observed spectrum of baryon states is obtained by means of quantization procedure and depends on their quantum numbers (isospin, strangeness, etc) and static characteristics of classical configurations. For the B = 1 case this was made first in the paper [1]. Masses, binding energies of classical configurations with baryon number B ≥ 2, their moments of inertia Θ I , Θ J , Σ-term (Γ ), and some other characteristics of the chiral solitons contain implicitly information about interaction between baryons.They are obtained usually numerically and depend on parameters of the model F π , e and masses of mesons which enter the mass term in the effective lagrangian 1 .2 Ordinary (S = 0) nuclei; symmetry energy as quantum correctionIn the SU (2) case, which is relevant for description of nonstrange baryons and nuclei, the rigid rotator quantization model is most adequate when quantum corrections are not too large. The symmetry energy E sym = b sym (N − Z) 2 /(2A), b sym ≃ 50 M eV , within chiral soliton approach is described mainly by the isospin dependent quantum correctionΘ I ∼ A being isotopical moment of inertia, I = (N −Z)/2 for the ground states of nuclei. The SU (2) quantization method -simplest and most reliable -is used here according to [1]. The moment of inertia Θ I grows not only with increasing number of colours, but also with increasing baryon number (∼ B approximately), therefore this correction decreases like ∼ 1/B and such estimates become more selfconsistent for larger B.In Fig.1 the differences of binding energies between states with integer isospins ...

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Θ+hypernuclei in relativistic mean-field model

Cited by 11 publications

References 44 publications

PentaquarkΘ+in nuclear matter andΘ+hypernuclei

PentaquarkΘ+in nuclear matter andΘ+hypernuclei

Pentaquarks in the medium in the quark-meson coupling model

Strange and heavy flavoured hypernuclei in chiral soliton models

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