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June 22, 2020 to July 2, 2020
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Invisible Neutrino Decays in Cosmology

Not scheduled


Stefan Sandner (IFIC UV / CSIC)


Neutrinos decaying on timescales which are shorter than the age of our Universe can relax cosmological neutrino mass bounds.

We categorize all possible invisible neutrino decay modes in terms of particle content and neutrino decay final states.
Our analysis shows that 3-body invisible neutrino decays are highly constraint, whereas 2-Body decays can significantly relax neutrino mass bounds.
Finally, we discuss model building considerations to develop models which can trigger such decays.


Neutrino decays can relax cosmological neutrino mass bounds

Primary authors

Dr Jacobo Lopez-Pavon (CERN) Miguel Escudero (King's College London) Prof. Nuria Rius (IFIC UV / CSIC) Stefan Sandner (IFIC UV / CSIC)

Presentation Materials