Scalar Dark Matter with Type II Seesaw

Abstract

We study the possibility of generating tiny neutrino mass through a combination of type I and type II seesaw mechanism within the framework of an abelian extension of standard model. The model also provides a naturally stable dark matter candidate in terms of the lightest neutral component of a scalar doublet. We compute the relic abundance of such a dark matter candidate and also point out how the strength of type II seesaw term can affect the relic abundance of dark matter. Such a model which connects neutrino mass and dark matter abundance has the potential of being verified or ruled out in the ongoing neutrino, dark matter as well as accelerator experiments.

v2: 19 pages, 6 figures, to appear in Nucl. Phys. B

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• Collider and Dark Matter Searches in the Inert Doublet Model from Peccei-Quinn Symmetry
• Observable Lepton Number Violation with Predominantly Dirac Nature of Active Neutrinos