20-24 May 2013
Europe/Berlin timezone
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Bonn - Small Lecture Hall Mathematics

Dark matter, singlet extensions of the nuMSM, and symmetries


  • Kyle ALLISON


The Lyman-alpha forest bound severely constrains the non-resonant production of warm dark matter in the nuMSM. It has been shown that an extension of the nuMSM by a Higgs singlet phi can provide a dark matter production mechanism through the decays of phi that readily satisfies or escapes the Lyman-alpha bound. I will discuss the astrophysical and cosmological constraints on such models and demonstrate how the required pattern of masses and couplings can be realized with underlying symmetries.