2008

Decaying Majoron Dark Matter and Neutrino Masses

Lattanzi, Massimiliano

Understand

We review the recent proposal by Lattanzi & Valle of the majoron as a suitable warm dark matter candidate.

The majoron is the Goldstone boson associated to the spontaneous breaking of ungauged lepton number, one of the mechanisms proposed to give rise to neutrino masses.
The majoron can acquire a mass through quantum gravity effects, and can possibly account for the observed dark matter component of the Universe.
We present constraints on the majoron lifetime, mass and abundance obtained by the analysis of the cosmic microwave background data.

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