Microscopic particle-rotor model for low-lying spectrum of Lambda hypernuclei

Abstract

We propose a novel method for low-lying states of hypernuclei based on the particle-rotor model, in which hypernuclear states are constructed by coupling the hyperon to low-lying states of the core nucleus. In contrast to the conventional particle-rotor model, we employ a microscopic approach for the core states, that is, the generator coordinate method (GCM) with the particle number and angular momentum projections. We apply this microscopic particle-rotor model to ${}_{\Lambda }^9$Be employing a point-coupling version of the relativistic mean-field Lagrangian. A reasonable agreement with the experimental data for the low-spin spectrum is achieved using the $\Lambda N$ coupling strengths determined to reproduce the binding energy of the $\Lambda$ particle.

6 pages, 2 figures. uses elsarticle.cls and numcompress.sty

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Cited by in corpus (3)

• Beyond mean-field study of elastic and inelastic electron scattering off nuclei
• Triaxially deformed relativistic point-coupling model for $\Lambda$ hypernuclei: a quantitative analysis of hyperon impurity effect on nuclear collective properties
• Configuration mixing in low-lying spectra of carbon hypernuclei