The mixing angle is a parameter that quantifies the extent to which different flavor states of particles, such as neutrinos, are superpositions of their mass states. In the context of neutrino oscillations, this angle determines the probability of a neutrino changing from one flavor to another as it propagates through space. The mixing angle plays a crucial role in understanding the mass differences between neutrino states and the phenomena of neutrino oscillation.
congrats on reading the definition of mixing angle. now let's actually learn it.