MEDEX'23

On the giant resonances of double-beta decay nuclei and nuclear matrix elements and phase space factors for the double-beta decay of 104Ru

Sep 5, 2023, 11:45 AM

30m

the Great Hall (Café Louvre Gallery)

Oral presentation Theory Theory

Speaker

Elina Kauppinen (University of Jyväskylä)

Description

Double-beta decay of nuclei, especially neutrinoless double-beta decay, is one of the most intriguing topics in nuclear physics. Observing the neutrinoless double-beta decay would mean physics beyond the standard model. In this presentation, I will cover some of the results of the studies of giant resonances in double-beta decay nuclei and the corresponding daughter nuclei. The strength functions for different multipoles have been obtained for all the studied nuclei. From the strength functions, the average energies have been calculated.

Also, I will present preliminary results for the study of nuclear matrix elements and phase space factors for ${}^{104}$Ru. This study is done in collaboration with an experimental group, IGISOL (Ion Guide Isotope Separation On-Line), from the University of Jyväskylä. They have precisely measured the Q-value for the double-beta decay of ${}^{104}$Ru $\to$ ${}^{104}$Pd. This Q-value is used in our calculations for the phase space factors. The half-life estimates for the two neutrino and neutrinoless double-beta decay are also calculated.

Presentation materials

Kauppinen_MEDEX.pdf