Neutrino




A neutrino (/nuːˈtriːnoʊ/ or /njuːˈtriːnoʊ/) (denoted by the Greek letter ν) is a lepton, an elementary particle with half-integer spin, that interacts only via the weak subatomic force and gravity. The mass of the neutrino is tiny compared to other subatomic particles. Neutrinos are the only identified candidate for dark matter, specifically hot dark matter.