English

Hypernuclear cluster states of $_\Lambda^{12}\rm{B}$ Unveiled through Neural Network-Driven Microscopic Calculation

Nuclear Theory 2025-02-24 v1

Abstract

We investigate the hypernuclear cluster states of Λ12B_\Lambda^{12}\mathrm{B} using a neural-network-driven microscopic model. We extend the Control Neural Networks (Ctrl.NN) method and systematically calculate the positive-parity spectrum of Λ12B_\Lambda^{12}\mathrm{B}. By incorporating sdsd-shell excitations and parity-coupling effects into the Λ12B_\Lambda^{12}\mathrm{B} hypernuclear system, we reveal structural changes, including clustering effects and new configurations such as isosceles-triangle and α\alpha-tt-α\alpha linear-chain structures. Furthermore, by comparing with experimental data, we identify that many peaks (#\#6 and #\#8) can be interpreted as pΛp_\Lambda dominant states, which is consistent with shell-model predictions. Notably, based on our analysis of the excited states of Λ12B_\Lambda^{12}\mathrm{B}, we propose possible candidates for previously unexplained or controversial experimental peaks.

Keywords

Cite

@article{arxiv.2502.15450,
  title  = {Hypernuclear cluster states of $_\Lambda^{12}\rm{B}$ Unveiled through Neural Network-Driven Microscopic Calculation},
  author = {Jiaqi Tian and Mengjiao Lyu and Zheng Cheng and Masahiro Isaka and Akinobu Dote and Takayuki Myo and Hisashi Horiuchi and Hiroki Takemoto and Niu Wan and Qing Zhao},
  journal= {arXiv preprint arXiv:2502.15450},
  year   = {2025}
}

Comments

8 pages, 3 figures, 1 table

R2 v1 2026-06-28T21:52:44.203Z