Tensor correlation, pairing interaction, and deformation in Ne isotopes and Ne hypernuclei

Li, Ang; Hiyama, Emiko; Zhou, Xian-Rong; Sagawa, H.

doi:10.1103/physrevc.87.014333

Cited by 28 publications

(33 citation statements)

References 80 publications

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“…The ordinary strangeness nuclear system is the single-Λ hypernucleus with one strange quark, s, i.e., S = −1. There have been many observables about single-Λ hypernuclei from light to heavy mass region [3,4], where the ΛN interaction is well extracted from the single-Λ binding energy, B Λ , in various theoretical methods, [5][6][7][8][9][10][11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

The $ΞN$ interaction constrained by recent $Ξ^-$ hypernuclei experiments

Hu,

Zhang,

Shen

2021

Preprint

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The ΞN interaction is investigated in the quark mean-field (QMF) model based on recent observables of the Ξ − + 14 N ( 15 Ξ − C) system. The experimental data about the binding energy of 1p-state Ξ − hyperon in 15 Ξ − C hypernuclei at KISO, IBUKI, E07-T011, E176-14-03-35 events are conflated as B Ξ − (1p) = 1.14 ± 0.11 MeV. With this constraint, the coupling strengths between the vector meson and Ξ hyperon are fixed in three QMF parameter sets. Meanwhile, the Ξ − binding energy of 1s state in 15 Ξ − C is predicted as B Ξ − (1s) = 5.66 ± 0.38 MeV with the same interactions, which are completely consistent with the data from the KINKA and IRRAWADDY events. Finally, the single ΞN potential is calculated in the symmetric nuclear matter in the framework of QMF models. It is U ΞN = −11.96 ± 0.85 MeV at nuclear saturation density, which will contribute to the study on the strangeness degree of freedom in compact star.

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Section: Introductionmentioning

confidence: 99%

The $ΞN$ interaction constrained by recent $Ξ^-$ hypernuclei experiments

Hu,

Zhang,

Shen

2021

Preprint

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“…G-matrix calculation [22], shell model [23], Skyrme-Hartree-Fock model [24][25][26][27], relativistic mean-field model [28][29][30][31][32][33][34], quark meson-coupling model [35][36][37], quark mean-field model [38][39][40], and so on for heavy hypernuclei. These models can describe the ground-state properties of Λ hypernuclei very well with various effective ΛN interactions.…”

Section: Introductionmentioning

confidence: 99%

Single $Λ_c^+$ hypernuclei within quark mean-field model

Wu,

Hu,

Shen

2020

Preprint

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The quark mean-field (QMF) model is applied to study the single Λ + c hypernuclei. The charm baryon, Λ + c , is constructed by three constituent quarks, u, d, and c, confined by central harmonic oscillator potentials. The confinement potential strength of charm quark is determined by fitting the experimental masses of charm baryons, Λ + c , Σ + c , and Ξ ++ cc . The effects of pions and gluons are also considered to describe the baryons at the quark level. The baryons in Λ + c hypernuclei interact with each other through exchanging the σ, ω, and ρ mesons between the quarks confined in different baryons. The Λ + c N potential in the QMF model is strongly dependent on the coupling constant between ω meson and Λ + c , g ωΛ + c . When the conventional quark counting rule is used, i. e., g ωΛ + c = 2/3g ωN , the massive Λ + c hypernucleus can exist, whose single Λ + c binding energy is smaller with the mass number increasing due to the strong Coulomb repulsion between Λ + c and protons. When g ωΛ + c is fixed by the latest lattice Λ + c N potential, the Λ + c hypernuclei only can exist up to A ∼ 50.

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“…More details can be found in Refs. [6,7] and references therein. By doing this we can perform the structure calculations of heavier hypernuclei than those in the previous studies [3,4].…”

Section: Introductionmentioning

confidence: 99%

“…1 of Ref. [6]. The nucleon pairing is introduced as a BCS-type density-dependent delta force V(r) = V pair 1 − ρ(r) ρ 0 with ρ 0 = 0.16 fm −3 , where V pair is the pairing strength and ρ(r) is the Hartree-Fock (HF) matter density.…”

Section: Introductionmentioning

confidence: 99%

Shape evolution of Ne isotopes and Ne hypernuclei: The interplay of pairing and tensor interactions

Hiyama

Zhou

et al. 2014

EPJ Web of Conferences

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Abstract. We study tensor and pairing effects on the quadruple deformation of neon isotopes based on a deformed Skyrme-Hartree-Fock model with BCS approximation for the pairing channel. We extend the Skyrme-Hartree-Fock formalism for the description of hypernuclei adopting the recently-proposed ESC08b hyperon-nucleon interaction. It is found that the interplay of pairing and tensor interactions is crucial to derive the deformations in several neon isotopes. Especially, the shapes of 26,30 Ne are studied in details in comparisons with experimentally observed shapes. Furthermore the deformations of the hypernuclei are compared with the corresponding neon isotopic cores in the presence of tensor force. We find the same shapes with somewhat smaller deformations for single Λ-hypernuclei compared with their core deformations.

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Tensor correlation, pairing interaction, and deformation in Ne isotopes and Ne hypernuclei

Cited by 28 publications

References 80 publications

The $ΞN$ interaction constrained by recent $Ξ^-$ hypernuclei experiments

The $ΞN$ interaction constrained by recent $Ξ^-$ hypernuclei experiments

Single $Λ_c^+$ hypernuclei within quark mean-field model

Shape evolution of Ne isotopes and Ne hypernuclei: The interplay of pairing and tensor interactions

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