Electromagnetic transitions from isobaric analogue states to study nuclear matrix elements for double beta decays and astro-neutrino inverse beta decays

Abstract

Experimental studies for nuclear matrix elements (NMEs) for neutrinoless double beta decays (DBDs) and astro-neutrino inverse beta decays (IBDs) are crucial for neutrino studies beyond the standard model and the astro neutrino reactions since theoretical model calculations for the NMEs are hard due to the high sensitivities of the NMEs to the models. The NMEs associated with DBDs and IBDs are found for the first time to be studied experimentally by measuring electro-magnetic (gamma) transitions from isobalic analogue states (IASs) of the DBD and IBD nuclei. They are used to help the theoretical model calculations for them. The IAS gamma cross sections and the event rates are estimated to show the feasibility of the experiments.

5 pages, 4 figures

References in corpus (10)

• Double Beta Decay, Majorana Neutrinos, and Neutrino Mass
• Status and Future of Nuclear Matrix Elements for Neutrinoless Double-Beta Decay: A Review
• Nuclear matrix elements for double-β decay
• Results from the Baksan Experiment on Sterile Transitions (BEST)
• Impact of the quenching of $g_{\mathrm{A}}$ on the sensitivity of $0\nu \beta \beta$ experiments
• The gallium anomaly revisited
• $\gamma \gamma$ decay as a probe of neutrinoless $\beta \beta$ decay nuclear matrix elements
• Spin dipole nuclear matrix elements for double beta decay nuclei by charge-exchange reactions
• Nuclear matrix elements for neutrinoless double beta decays and spin-dipole giant resonances
• FSQP nuclear matrix elements for two neutrino double beta decays