Flavor evolution of supernova neutrinos in the presence of scalar-mediated non-standard neutrino interaction

Sudipta Das, Ph.D.

Neutrinos from supernovae are among the most powerful sources of cosmic neutrinos. During the explosion of a core-collapse supernova, an enormous number of neutrinos are produced over a timescale of several seconds, carrying away nearly all of the released energy. As these neutrinos propagate outward from the supernova core, they traverse regions of extremely high and rapidly varying matter densities, which strongly affect their flavor evolution. In this talk, I will discuss the flavor transition of neutrinos originating in the supernova core and the resulting neutrino flux expected at Earth. In the latter part of the talk, I will discuss the possible effects of scalar-mediated non-standard neutrino–matter interactions on the propagation of active neutrinos inside a supernova.