A1 Journal article (refereed)
Ab initio calculation of muon capture on 24Mg (2023)

Jokiniemi, L., Miyagi, T., Stroberg, S. R., Holt, J. D., Kotila, J., & Suhonen, J. (2023). Ab initio calculation of muon capture on 24Mg. Physical Review C, 107(1), Article 014327. https://doi.org/10.1103/PhysRevC.107.014327

JYU authors or editors

Publication details

All authors or editors: Jokiniemi, L.; Miyagi, T.; Stroberg, S. R.; Holt, J. D.; Kotila, J.; Suhonen, J.

Journal or series: Physical Review C

ISSN: 2469-9985

eISSN: 2469-9993

Publication year: 2023

Publication date: 31/01/2023

Volume: 107

Issue number: 1

Article number: 014327

Publisher: American Physical Society (APS)

Publication country: United States

Publication language: English

DOI: https://doi.org/10.1103/PhysRevC.107.014327

Publication open access: Not open

Publication channel open access: 

Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/85749

Publication is parallel published: https://arxiv.org/abs/2111.12992

Abstract

In this work we study ordinary muon capture (OMC) on 24Mg from a first-principles perspective. Starting from a particular two- and three-nucleon interaction derived from chiral effective field theory, we use the valence-space in-medium similarity renormalization group (VS-IMSRG) framework to construct effective Hamiltonians and muon-capture operators, which nonperturbatively account for many-body physics outside the valence space. The obtained nuclear matrix elements are compared against those from the phenomenological shell model. The impact of including the correlations from the nuclear shell model (NSM) as well as including the induced two-body part is studied in detail. Furthermore, the effects of realistic bound-muon wave function on the operators is studied. Finally, predictions for capture rates to the lowest excited states in 24Na are given and compared with available data. It is found that the spectroscopic properties of 24Mg and its OMC daughter 24Na are fairly well described by both the NSM and VS-IMSRG, and that the effect of the hadronic two-body currents significantly reduces the OMC rates. Both models have some difficulties in matching the measured OMC rates, especially for the 2+ final states. This calls for further studies in other light nuclei with available OMC data.

Keywords: nuclear physics

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Ministry reporting: Yes

Reporting Year: 2023

Preliminary JUFO rating: 2