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Light neutron-rich hypernuclei from the importance-truncated no-core shell model

Wirth, Roland ; Roth, Robert (2022):
Light neutron-rich hypernuclei from the importance-truncated no-core shell model. (Publisher's Version)
In: Physics Letters B, 779, pp. 336-341. Elsevier, ISSN 0370-2693, e-ISSN 1873-2445,
DOI: 10.26083/tuprints-00012726,

Copyright Information: CC BY 4.0 International - Creative Commons, Attribution.

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Item Type: Article
Origin: Secondary publication
Status: Publisher's Version
Title: Light neutron-rich hypernuclei from the importance-truncated no-core shell model
Language: English

We explore the systematics of ground-state and excitation energies in singly-strange hypernuclei throughout the helium and lithium isotopic chains — from ⋀⁵He to ⋀¹¹He and from ⋀⁷Li to ⋀¹²Li — in the ab initio no-core shell model with importance truncation. All calculations are based on two- and threebaryon interaction from chiral effective field theory and we employ a similarity renormalization group transformation consistently up to the three-baryon level to improve the model-space convergence. While the absolute energies of hypernuclear states show a systematic variation with the regulator cutoff of the hyperon–nucleon interaction, the resulting neutron separation energies are very stable and in good agreement with available data for both nucleonic parents and their daughter hypernuclei. We provide predictions for the neutron separation energies and the spectra of neutron-rich hypernuclei that have not yet been observed experimentally. Furthermore, we find that the neutron drip lines in the helium and lithium isotopic chains are not changed by the addition of a hyperon.

Journal or Publication Title: Physics Letters B
Volume of the journal: 779
Publisher: Elsevier
Classification DDC: 500 Naturwissenschaften und Mathematik > 530 Physik
Divisions: 05 Department of Physics > Institute of Nuclear Physics
Date Deposited: 24 Mar 2022 13:24
Last Modified: 24 Mar 2022 13:24
DOI: 10.26083/tuprints-00012726
Corresponding Links:
URN: urn:nbn:de:tuda-tuprints-127268
Additional Information:

Keywords: Hypernuclei; Ab-initio methods; Neutron-rich nuclei; Neutron separation energies; Neutron drip line

URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/12726
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