The roles of three-nucleon force and continuum coupling in mirror symmetry breaking of oxygen mass region

Zhang, S.; Ma, Y. Z.; Li, J. G.; Hu, B. S.; Yuan, Q.; Cheng, Z. H.; Xu, F. R.

doi:10.1016/j.physletb.2022.136958

Title: The roles of three-nucleon force and continuum coupling in mirror symmetry breaking of oxygen mass region

Journal Article · 09 February 2022 · Physics Letters. B

DOI: https://doi.org/10.1016/j.physletb.2022.136958 · OSTI ID:1977565

Zhang, S. ^[1]; Ma, Y. Z. ^[2]; Li, J. G. ^[2];

^[2]; Yuan, Q. ^[2];

^[2];

^[2]

Peking University, Beijing (China); School of Physics, and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, China
Peking University, Beijing (China)

With both three-nucleon force and continuum coupling included, we have developed a self-consistent ab initio Gamow shell model within the Gamow Hartree-Fock (GHF) basis obtained by the realistic interaction itself. With the chiral two-nucleon N³LO and three-nucleon N²LO interactions, the Gamow shell model has been applied to the mirror systems of Z = 8 neutron-rich isotopes and N = 8 proton-rich isotones, giving good agreements with data in binding energies, dripline positions and excitation spectra. The GHF calculated that the 0_ds/2, 1_S1/2 and 1_p3/2 orbitals are resonances. The resonance states and their interplay with nonresonant continua play a crucial role in the descriptions of nuclei around driplines. Excitation spectra and Thomas-Ehrman shifts observed can be better described when both three-nucleon force and continuum coupling are considered in calculations. The three-nucleon force and continuum coupling produce a combined effect on the Thomas-Ehrman shift, e.g., for the 1/2⁺ resonance level of 19Na. The calculations help the understandings of related nuclear astrophysical processes.

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Research Organization:: Peking University, Beijing (China); Texas A & M University, Commerce, TX (United States)

Sponsoring Organization:: China Postdoctoral Science Foundation; National Key R&D Program of China; National Natural Science Foundation of China; Peking University; USDOE Office of Science (SC)

Grant/Contract Number:: SC0009971

OSTI ID:: 1977565

Journal Information:: Physics Letters. B, Journal Name: Physics Letters. B Journal Issue: C Vol. 827; ISSN 0370-2693

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
79 ASTRONOMY AND ASTROPHYSICS
Gamow shell model
Thomas-Ehrman shift
continuum coupling
mirror nuclei
oxygen mass region
three-nucleon force

Title: The roles of three-nucleon force and continuum coupling in mirror symmetry breaking of oxygen mass region

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