On the Origin of Neutrino Mass and Experimental Searches

Proof of neutrino masses and mixing from a series of outstanding experimental efforts have opened a window to physics beyond the standard model of particle physics. There are well-defined underlying theories which explain the electron volt neutrino masses. It is well known that Seesaw mechanism has its success in explaining the smallness of neutrino mass. In this talk, I will discuss about the origin of neutrino masses in beyond standard model theories and the testability of these theories in experimental searches, in particular neutrinoless double beta decay and collider search. One of the very attractive class of search is lepton number violating search at non-collider and collider experiments, that can probe the Majorana nature of the light or heavy neutrinos. In addition, I will also discuss the possibility to probe Seesaw through Higgs window, as well as the flavor violating Higgs decays that can arise in the BSM extensions.