Speaker
Rahul Srivastava
Description
More than eighty years after they were first proposed, neutrinos still remain an enigma. Although they are an integral part of Standard Model but still we know very little about them. In particular, the Dirac or Majorana nature of neutrinos is still unclear with no clear indication of their nature. However, for a long time, theoretical particle physicists believed that neutrinos must be Majorana in nature and several elegant mass generation mechanisms have been proposed for Majorana neutrinos. In this talk, I will discuss the multitude of ways in which naturally small Dirac neutrino masses can be generated. I will also discuss the various interesting and sometimes surprising connections between Dirac nature of neutrinos and Dark Matter stability, proton decay etc.
