Decaying Majoron Dark Matter and Neutrino Masses

Details Decaying Majoron Dark Matter and Neutrino Masses Decaying Majoron Dark Matter and Neutrino Masses

2008-02-21

arxiv.org/abs/0802.3155v1

AIP Conf.Proc.966:163-169,2007

Astronomy and Astrophysics

Astrophysics

7 pages, 3 figures. Contribution to proceedings of the 4th Sino-Italian Workshop on Relativistic Astrophysics, Pescara, 20-30

Scientific paper

10.1063/1.2836988

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. We find that, in the case of thermal production, the limits for the majoron mass read 0.12 keV

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