Probing models of neutrino mass and neutrino interactions with cosmology and colliders. Kathryn Zurek, University of Wisconsin, Madison

by Zurek Kathryn (University of Wisconsin, Madison)

Wednesday 18 Jul 2007, 11:00 → 12:00 Europe/Zurich

TH AMPHITHEATRE (CERN)

In several classes of particle physics models -- ranging from the classic Majoron and low energy see-saw models, to the more recent scenarios of Late Time Neutrino Masses and Mass-Varying Neutrinos -- one or more of the neutrinos are postulated to couple to a new light scalar field. As a result of this coupling, neutrinos in the early universe instead of streaming freely could form a self-coupled fluid, with potentially observable signatures in the Cosmic Microwave Background and the large scale structure of the universe. Some of these same models of neutrino mass also generate novel phenomenology at colliders. I discuss collider signatures of low energy neutrino mass generation, but focus in particular on the constraints on the coupled neutrinos arising in these models from present and future cosmological data.