Majorana mass

Majorana mass refers to a type of particle mass where a particle is its own antiparticle, meaning it doesn't have a separate "antiparticle" counterpart. Unlike most particles which have distinct antiparticles, Majorana particles are identical to their antiparticles. This concept is significant in theories beyond the Standard Model of physics, especially for neutrinos—tiny, elusive particles. If neutrinos have Majorana mass, it could help explain why they are so light and provide insights into the matter-antimatter imbalance in the universe. Detecting Majorana neutrinos would be a major breakthrough in understanding fundamental physics.