Charge symmetry breaking in hypernuclei within RMF model
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arXiv
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| Auteurs principaux: | , , , |
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| Format: | Preprint |
| Publié: |
2025
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| _version_ | 1866913799127171072 |
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| author | Sun, Ting-Ting Tanimura, Yusuke Sagawa, Hiroyuki Hiyama, Emiko |
| author_facet | Sun, Ting-Ting Tanimura, Yusuke Sagawa, Hiroyuki Hiyama, Emiko |
| contents | We study the charge symmetry breaking (CSB) effect in the binding energy of mirror hypernuclei in the mass region $A=7\sim 48$ in relativistic mean field (RMF) models introducing $NN$ and $ΛN$ interactions. The phenomenological $ΛN$ CSB interaction is introduced and the strength parameter is fitted to reproduce the experimental binding energy difference between the mirror hypernuclei $^{12}_Λ$B and $^{12}_Λ$C. This model is applied to calculate the CSB energy anomaly in mirror hypernuclei with the mass $A=7\sim48$. The model is further applied to predict the binding energy difference of mirror hypernuclei of $A$=40 with the isospin $T=1/2$, $3/2$ and $5/2$ nuclei together with various hyper Ca isotopes and their mirror hypernuclei. Finally the binding energy systematics of $A=$48 hypernuclei are predicted with/without the CSB effect by the PK1 and TM2 energy density functionals (EDFs). |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2502_21161 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Charge symmetry breaking in hypernuclei within RMF model Sun, Ting-Ting Tanimura, Yusuke Sagawa, Hiroyuki Hiyama, Emiko Nuclear Theory We study the charge symmetry breaking (CSB) effect in the binding energy of mirror hypernuclei in the mass region $A=7\sim 48$ in relativistic mean field (RMF) models introducing $NN$ and $ΛN$ interactions. The phenomenological $ΛN$ CSB interaction is introduced and the strength parameter is fitted to reproduce the experimental binding energy difference between the mirror hypernuclei $^{12}_Λ$B and $^{12}_Λ$C. This model is applied to calculate the CSB energy anomaly in mirror hypernuclei with the mass $A=7\sim48$. The model is further applied to predict the binding energy difference of mirror hypernuclei of $A$=40 with the isospin $T=1/2$, $3/2$ and $5/2$ nuclei together with various hyper Ca isotopes and their mirror hypernuclei. Finally the binding energy systematics of $A=$48 hypernuclei are predicted with/without the CSB effect by the PK1 and TM2 energy density functionals (EDFs). |
| title | Charge symmetry breaking in hypernuclei within RMF model |
| topic | Nuclear Theory |
| url | https://arxiv.org/abs/2502.21161 |