Volume 495 - Matrix Elements for the Double beta decay EXperiments (MEDEX2025) - session Theory
QRPA and PQRPA treatments of Ordinary Muon Capture: the case of 136Ba
O. Civitarese*, J. Kotila and J. Suhonen
*: corresponding author
Full text: pdf
Published on: October 31, 2025
Abstract
The proton-neutron quasiparticle random-phase approximation (QRPA) and its particle-number projected version (PQRPA) are used to calculate the ordinary muon capture (OMC) on the ground state of $^{136}$Ba.
Both the neutrinoless double beta decay ($0\nu\beta\beta$) and OMC populate the ground and excited states of $^{136}$Cs. This offers, for the case of the OMC, a valuable source of information about the still unobserved lepton number violating $0\nu\beta\beta$ process. We have computed OMC rates to nuclear states in $^{136}$Cs, in a region accessible to present-day OMC experiments. It turns out that the OMC rates computed in the PQRPA framework are larger than those computed using the QRPA.
DOI: https://doi.org/10.22323/1.495.0003
How to cite

Metadata are provided both in article format (very similar to INSPIRE) as this helps creating very compact bibliographies which can be beneficial to authors and readers, and in proceeding format which is more detailed and complete.

Open Access
Creative Commons LicenseCopyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.