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arXiv · 2403.18232

Trineutron resonances in the SS-HORSE-NCSM approach

I. A. Mazur·M. K. Efimenko·A. I. Mazur·I. J. Shin·V. A. Kulikov·A. M. Shirokov·J. P. Vary
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Abstract

The SS-HORSE-NCSM method is generalized to the case of democratic decay into an odd number of fragments. This method is applied to the search for resonances in three-neutron system (trineutron) using ab initio No-Core Shell Model calculations with realistic nucleon-nucleon potentials. The $3/2^-$ and $1/2^-$ strongly overlapping resonances are predicted when softened $NN$ interactions are used and are preferred over the case where bare $NN$ interactions of the chiral effective field theory are used with no resonance obtained.

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I. A. Mazur, M. K. Efimenko, A. I. Mazur, I. J. Shin, V. A. Kulikov, A. M. Shirokov, J. P. Vary. 2024-03-27. Trineutron resonances in the SS-HORSE-NCSM approach. https://doi.org/10.1103/physrevc.110.014004

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