MEDEX'19

Session

Session (Chair: F. Simkovic)

May 28, 2019, 11:00 AM

Balling Hall (ground floor) (The Czech National Library of Technology)

55. More than Exotic Neutrinoless Double Beta Decay with Majoron-like Emission

Dr Frank Deppisch (UCL)

5/28/19, 11:00 AM

Oral Presentation

I present a novel mode of neutrinoless double beta decay with emission of a light Majoron-like scalar particle $\phi$. We assume it couples via an effective seven-dimensional operator with a $(V+A)$ lepton current and $(V\pm A)$ quark currents leading to a long-range contribution that is unsuppressed by the light neutrino mass. Calculating the total double beta decay rate and determine the...

56. Double beta decay beyond the mass mechanism

Prof. Martin Hirsch (Instituto de Fisica Corpuscular, CSIC/University of Valencia)

5/28/19, 11:30 AM

Oral Presentation

Neutrinoless double beta decay is usually considered a probe for Majorana neutrino masses. However, there are many other potential contributions to the total decay amplitude. In this talk, I will summarize a number of recent papers on such "exotic" contributions to double beta decay.

57. Investigation of Lorentz violation in double-beta decay

Prof. Sabin Stoica (International Center for Advances Training and Research in Physics)

5/28/19, 12:00 PM

Oral Presentation

Observable effects of the Lorentz violation symmetry at low energy scale can also be investigated by comparing the theoretical calculations with precise analysis of the measured summed energy spectra of electrons emitted in two-neutrino double beta decay (DBD) mode. In this study we make a detailed comparison of the phase space factors (PSF) and their differentials computed with analytical...