X-ray photons from late-decaying majoron dark matter

Bazzocchi, Federica, Lattanzi, Massimiliano, Riemer-Sorensen, Signe and Valle, Jose W. F. (2008) X-ray photons from late-decaying majoron dark matter. Journal of Cosmology and Astroparticle Physics, 8: . doi:10.1088/1475-7516/2008/08/013


Author Bazzocchi, Federica
Lattanzi, Massimiliano
Riemer-Sorensen, Signe
Valle, Jose W. F.
Title X-ray photons from late-decaying majoron dark matter
Journal name Journal of Cosmology and Astroparticle Physics   Check publisher's open access policy
ISSN 1475-7516
Publication date 2008-08
Sub-type Article (original research)
DOI 10.1088/1475-7516/2008/08/013
Issue 8
Total pages 15
Place of publication Bristol, United Kingdom
Publisher Institute of Physics Publishing
Language eng
Abstract An attractive way to generate neutrino masses as required to account for current neutrino oscillation data involves the spontaneous breaking of lepton number. The resulting majoron may pick up a mass due to gravity. If its mass lies in the kilovolt scale, the majoron can play the role of late-decaying dark matter (LDDM), decaying mainly to neutrinos. In general the majoron has also a sub-dominant decay to two photons leading to a mono-energetic emission line which can be used as a test of the LDDM scenario. We compare expected photon emission rates with observations in order to obtain model-independent restrictions on the relevant parameters. We also illustrate the resulting sensitivities within an explicit seesaw realization, where the majoron couples to photons due to the presence of a Higgs triplet.
Keyword Dark matter
Neutrino properties
High energy photons
Cosmology of theories beyond the SM
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ
Additional Notes Article # 013

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mathematics and Physics
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