[Triumf-seminars] TRIUMF Theory Seminar today at 13:00

[TRIUMF Seminars]

Date/Time: Tue 2015-03-24 at 13:00

Location:  Theory Room         

Speaker:   Brian Shuve (Perimeter)

Title:     Not-so-sterile Neutrinos and New Leptonic Interactions

Abstract: The Standard Model supplemented with three light sterile neutrinos is a well-motivated, minimal model that accounts for dark matter, baryogenesis, and neutrino masses. However, in such theories the sterile neutrinos turn out to be too sterile: their feeble interactions with the Standard Model generically result in an under-abundance of dark matter and baryons, and the theory is only consistent with cosmological observations with substantial tuning of model parameters. I show how new interactions coupled to Standard Model leptons greatly enhance the baryon and dark matter abundances, eliminating the need for tuning among parameters. This gives generic predictions for probing models of not-so-sterile neutrinos, and I discuss some proposals for doing so.



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