SS-HORSE extension of the no-core shell model: Application to resonances in 7He

被引：7
作者：
Mazur, I. A. [1 ,2 ,6 ]
Shin, I. J. [3 ]
Kim, Y. [3 ]
Mazur, A. I. [2 ]
Shirokov, A. M. [4 ]
Maris, P. [5 ]
Vary, J. P. [5 ]
机构：
[1] Korea Univ, Ctr Extreme Nucl Matters, Seoul 02841, South Korea
[2] Pacific Natl Univ, Lab Modeling Quantum Proc, Khabarovsk 680035, Russia
[3] Inst for Basic Sci Korea, Isotope Sci Project, Daejeon 34000, South Korea
[4] Lomonosov Moscow State Univ, Inst Nucl Phys, Moscow 119991, Russia
[5] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA
[6] Inst for Basic Sci Korea, Ctr Exot Nucl Studies, Daejeon 34126, South Korea
来源：
PHYSICAL REVIEW C | 2022年 / 106卷 / 06期
基金：
新加坡国家研究基金会; 俄罗斯基础研究基金会;
关键词：
LIGHT-NUCLEI; OSCILLATOR-BASIS; MATRIX; STATES;
D O I：
10.1103/PhysRevC.106.064320
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
Theoretical ab initio studies of resonances in the unbound 7He nucleus are presented. We perform no-core shell-model calculations with NN interactions Daejeon16 and JISP16 and utilize the SS-HORSE method to calculate the S matrix for two-body channels n + 6He and n + 6He??? with 6He respectively in the ground and excited 2+ states as well as for the four-body democratic decay channel 4He + n + n + n. The resonant energies and widths are obtained by numerical location of the S-matrix poles. We describe all experimentally known 7He resonances and suggest an interpretation of an observed wide resonance of unknown spin-parity.
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页数：10
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