A1 Journal article (refereed)
Comparative analysis of muon-capture and 0νββ-decay matrix elements (2020)


Jokiniemi L., Suhonen J. (2020). Comparative analysis of muon-capture and 0νββ-decay matrix elements. Physical Review C, 102(2), Article 024303. https://doi.org/10.1103/PhysRevC.102.024303


JYU authors or editors


Publication details

All authors or editors: Jokiniemi L.; Suhonen J.

Journal or series: Physical Review C

ISSN: 2469-9985

eISSN: 2469-9993

Publication year: 2020

Volume: 102

Issue number: 2

Article number: 024303

Publisher: American Physical Society (APS)

Publication country: United States

Publication language: English

DOI: https://doi.org/10.1103/PhysRevC.102.024303

Publication open access: Not open

Publication channel open access:

Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/71414


Abstract

Average matrix elements of ordinary muon capture (OMC) to the intermediate nuclei of neutrinoless double beta (0νββ) decays of current experimental interest are computed and compared with the corresponding energy and multipole decompositions of 0νββ-decay nuclear matrix elements (NMEs). The present OMC computations are performed using the Morita-Fujii formalism by extending the original formalism beyond the leading order. The 0νββ NMEs include the appropriate short-range correlations, nuclear form factors, and higher-order nucleonic weak currents. The nuclear wave functions are obtained in extended no-core single-particle model spaces using the spherical version of the proton-neutron quasiparticle random-phase approximation with two-nucleon interactions based on the Bonn one-boson-exchange G matrix. Both the OMC and 0νββ processes involve 100-MeV-range momentum exchanges and hence similarities could be expected for both processes in the feeding of the 0νββ intermediate states. These similarities may help improve the accuracy of the 0νββ NME calculations by using the data from the currently planned OMC experiments.


Keywords: nuclear physics; particle physics

Free keywords: collective models; double beta decay; electron and muon capture; neutrinoless double beta decay; nuclear many-body theory


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Ministry reporting: Yes

Reporting Year: 2020

JUFO rating: 2


Last updated on 2021-28-09 at 14:01