Speaker
Manibrata Sen
(Max-Planck-Institut für Kernphysik)
Description
Ever since the discovery of neutrinos, we have wondered if neutrinos are their own antiparticles, and whether lepton number is violated or not. One remarkable possibility is that lepton-number violation in the Standard Model is soft. In such scenarios, neutrinos have a pseudo-Dirac nature, with a tiny mass difference between active and sterile states, having oscillations driven by this tiny mass difference. Such oscillations can only be visible over very long distances. In this talk, I will discuss how analyzing the neutrino data from far away sources like supernovae as well as other high energy neutrino sources in the light of active-sterile oscillations can be used to test the possible, albeit tiny, violation of lepton number.
Primary author
Manibrata Sen
(Max-Planck-Institut für Kernphysik)
