Sensitivity of Λ single-particle energies to the Λ N spin–orbit coupling and to nuclear core structure in p -shell and sd -shell hypernuclei

Veselý, Petr; Hiyama, Emiko; Hrtánková, J.; Mareš, J.

doi:10.1016/j.nuclphysa.2016.05.013

Cited by 7 publications

(8 citation statements)

References 53 publications

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“…They are enhanced, in much better agreement with the experiments, once the N N N force is included. It is worth to notice that the phenomenological DD term adopted in our previous study produces a similar effect [13].…”

Section: Calculation Details and Resultsmentioning

confidence: 54%

“…The mean square charged radius is given by to notice that the phenomenological DD term adopted in our previous study produces a similar effect [13].…”

Section: Calculation Details and Resultsmentioning

confidence: 88%

“…There are very few theoretical approaches which use realistic interaction to describe the hypernuclei above the pshell. Among them, let us mention the auxiliary field diffusion Monte Carlo (AFDMC) method [10,11] which adopts local baryonic forces and the hypernuclear mean-field model using realistic nucleon-nucleon (N N ) and nucleon-Λ (N Λ) interactions [12,13].…”

Section: Introductionmentioning

confidence: 99%

“…Their correct description was partly achieved by including a phenomenological repulsive density dependent (DD) term simulating the N N N interaction [16,17]. In our previous work [13], in fact, such a DD force was added to the optimized chiral N N potential NNLO opt [18] to generate the hypernuclear mean field.…”

Section: Introductionmentioning

confidence: 99%

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Effect of a realistic three-body force on the spectra of medium-mass hypernuclei

Veselý¹,

Gregorio²,

Pokorný³

2018

Phys. Scr.

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We adopt the Hartree-Fock (HF) method in the proton-neutron-Λ (p-n-Λ) formalism and the nucleon-Λ Tamm-Dancoff Approximation (NΛ TDA) to study the energy spectra of medium-mass hypernuclei. The formalism is developed for a potential derived from effective field theories which includes explicitly the 3-body N N N forces plus the Y N LO potential. The energy spectra of selected medium-mass hypernuclei are presented and their properties discussed. The present calculation is the first step of a project devoted to ab initio studies of hypernuclei in medium and heavy mass regions. This may provide a guide for a better understanding of the Y N interactions at momentum scales not accessible in few-body hypernuclei.

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Section: Calculation Details and Resultsmentioning

confidence: 54%

“…The mean square charged radius is given by to notice that the phenomenological DD term adopted in our previous study produces a similar effect [13].…”

Section: Calculation Details and Resultsmentioning

confidence: 88%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Effect of a realistic three-body force on the spectra of medium-mass hypernuclei

Veselý¹,

Gregorio²,

Pokorný³

2018

Phys. Scr.

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“…The symmetry (SLS) and the anti-symmetric (ALS) spin-orbit terms to the energy splitting in discussed in Ref. [32,33].…”

Section: Spin-orbit Potential In Nucleimentioning

confidence: 99%

Contribution of the rho meson and quark sub-structure to the nuclear spin-orbit potential

Chanfray,

Margueron

2020

Preprint

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The microscopic origin of the spin-orbit (SO) potential in terms of sub-baryonic degrees of freedom is explored and discussed for application to nuclei and hyper-nuclei. We thus develop a chiral relativistic approach where the coupling to the scalar and vector meson fields are controlled by the quark substructure. This approach suggests that the isoscalar and isovector density dependence of the SO potential can be used to test the microscopic ingredients which are implemented in the relativistic framework: the quark sub-structure of the nucleon in its ground-state and its coupling to the rich meson sector where the ρ meson plays a crucial role. This is also in line with the Vector Dominance Model (VDM) phenomenology and the known magnetic properties of the nucleons. We explore predictions based on Hartree and Hartree-Fock mean field, as well as various scenarios for the ρ-nucleon coupling, ranked as weak, medium and strong, which impacts the isoscalar and isovector density dependence of the SO potential. We show that a medium to strong ρ coupling is essential to reproduce Skyrme phenomenology in N = Z nuclei as well as its isovector dependence. Assuming SU(6) valence quark model our approach is extended to hyperons and furnishes a microscopic understanding of the quenching of the NΛ spin-orbit potential in hyper-nuclei. It is also applied to other hyperons, such as Σ, Ξ and Ω.

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Structure of the ground and excited states in Λ9Be nucleus

2021

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Sensitivity of Λ single-particle energies to the Λ N spin–orbit coupling and to nuclear core structure in p -shell and sd -shell hypernuclei

Cited by 7 publications

References 53 publications

Effect of a realistic three-body force on the spectra of medium-mass hypernuclei

Effect of a realistic three-body force on the spectra of medium-mass hypernuclei

Contribution of the rho meson and quark sub-structure to the nuclear spin-orbit potential

Structure of the ground and excited states in Λ9Be nucleus

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