Higgs decays to dark matter: beyond the minimal model

Details Higgs decays to dark matter: beyond the minimal model Higgs decays to dark matter: beyond the minimal model

2011-09-22

arxiv.org/abs/1109.4872v3

Physics

High Energy Physics

High Energy Physics - Phenomenology

6 pages, 1 figure; v2: references added; v3: typos corrected, to appear in Phys. Rev. D

Scientific paper

We examine the interplay between Higgs mediation of dark matter annihilation and scattering on one hand, and the invisible Higgs decay width on the other, in a generic class of models utilizing the Higgs portal. We find that, while the invisible width of the Higgs to dark matter is now constrained for a minimal singlet scalar WIMP by experiments such as XENON100, this conclusion is not robust within more generic examples of Higgs mediation. We present a survey of simple WIMP scenarios with m_{DM} < m_h/2 and Higgs portal mediation, where direct detection signatures are suppressed, while the Higgs width is still dominated by decays to dark matter.

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