Invisible Higgs and Dark Matter

Preprint number: CP3-Origins-2012-6 and DIAS-2012-7
Authors: Matti Heikinheimo (York University), Kimmo Tuominen (University of Jyvaskyla & Helsinki Institute of Physics), and Jussi Virkajarvi (CP3-Origins & DIAS)
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We investigate the possibility that a massive weakly interacting fermion simultaneously provides for a dominant component of the dark matter relic density and an invisible decay width of the Higgs boson at the LHC. Taking into account the constraints from the electroweak precision measurements and current direct searches for dark matter particles, we find that such scenario is heavily constrained. As a concrete model realizing such dynamics we consider the minimal walking technicolor, although our results apply more generally.