Low-energy hypernuclear spectra within a microscopic particle-rotor model with a relativistic point-coupling hyperon-nucleon interaction

H. Mei, K. Hagino, J. M. Yao, T. Motoba

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

We extend the microscopic particle-rotor model for hypernuclear low-lying states by including the derivative and tensor coupling terms in the point-coupling nucleon Λ-particle (NΛ) interaction. Taking CΛ13 as an example, we show that a good overall description for excitation spectra is achieved with four sets of effective NΛ interactions. We find that the Λ hyperon binding energy decreases monotonically with increasing strengths of the high-order interaction terms. In particular, the tensor coupling term decreases the energy splitting between the first 1/2- and 3/2- states and increases the energy splitting between the first 3/2+ and 5/2+ states in CΛ13.

Original languageEnglish
Article number044307
JournalPhysical Review C
Volume93
Issue number4
DOIs
Publication statusPublished - 2016 Apr 12

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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