When:
Monday, October 31, 2016
4:00 PM - 5:00 PM CT
Where: Technological Institute, F160, 2145 Sheridan Road, Evanston, IL 60208 map it
Audience: Faculty/Staff - Student - Public - Post Docs/Docs - Graduate Students
Contact:
Pamela Villalovoz
(847) 491-3644
Group: Physics and Astronomy High Energy Physics Seminars
Category: Academic
Title: New physics in Supernovae and IceCube Flavor Ratios
Speaker: Bedran Brdar, University of Mainz
Abstract: Dark matter (DM) particles can be captured by stars via scattering on ordinary matter. As a benchmark model for s-wave and p-wave annihilation we consider DM annihilation into dark photons and dark scalars which further decay into SM particles. We trace DM capture and annihilation rates throughout the life of a massive star and show that this evolution ends in an observable gamma ray flash. The special feature of the model is that the photon flux from p-wave annihilation is stronger in comparison to the one from s-wave process. In the remainder of the talk, I will discuss flavor ratios in IceCube in the 4-flavor scenario assuming the presence of eV-scale sterile neutrino.
Keywords: Physics, Astronomy, HEP