theories of neutrino masses

Neutrinos are tiny, nearly massless particles that play a key role in the universe, but they do have a small mass, which surprised scientists. Theories about neutrino masses attempt to explain this mystery. One idea is the seesaw mechanism, which suggests that neutrinos gain mass through their interactions with heavier particles. Another theory considers neutrinos as Majorana particles, which means they could be their own antiparticles. These concepts help unify particle physics and may provide insights into why there is more matter than antimatter in the universe. Understanding neutrino masses could reveal fundamental truths about the cosmos.