Hiding neutrinoless double beta decay in the minimal seesaw mechanism
Citations Over TimeTop 10% of 2021 papers
Abstract
We present a possibility that the neutrinoless double beta decay can be hidden in the minimal seesaw mechanism where the standard model is extended by two right-handed neutrinos which have a hierarchical mass structure. In this framework, the lepton number is violated due to the massive Majorana neutrinos. Especially, we investigate the case that the heavier right-handed neutrino is sufficiently heavy to decouple from the decay while the lighter one is lighter enough than the typical Fermi-momentum scale of nuclei and gives a sizable contribution to the decay. Under the specific condition on mixing elements, the lighter right-handed neutrino can give a significant destructive contribution which suppresses or even hides to the effective mass of the neutrinoless double beta decay. In this case, the flavor structure of the mixing element of the lighter right-handed neutrino with ordinary neutrinos is predicted depending on the Majorana $CP$ violating phase of active neutrinos.
Related Papers
- → Can one have significant deviations from leptonic 3 $$\times $$ × 3 unitarity in the framework of type I seesaw mechanism?(2018)29 cited
- Seesaw25 : Proceedings of the International Conference on the Seesaw Mechanism : Institut Henri Poincaré, Paris 10-11 June 2004(2005)
- → Neutrino masses and Neutrinoless Double Beta Decay: Status and expectations(2010)10 cited
- → Shell model calculations for neutrinoless double beta decay(2015)
- → Constraints on light neutrino parameters derived from the study of neutrinoless double beta decay(2014)