Postulated in 1931 to account for the missing energy in beta decay, it was tenitively identified in 1953 and more definitely in 1956, has no charge, and is thought to travel at the speed of light and have zero rest mass, although in some grand unified theories it is predicted to have nonzero mass.
Several methods to detect this particle rely on its interactions with isotopes, including its conversion of gallium-71 to germanium-71 and chlorine-37 to radioactive argon, the latter of which is used at the Homestake gold mine observatory in South Dakota. Postulated in 1931 to account for the missing energy in beta decay, it was tenitively identified in 1953 and more definitely in 1956, has no charge, and is thought to travel at the speed of light and have zero rest mass, although in some grand unified theories it is predicted to have nonzero mass. FTP, what are these leptons associated with the tau particle, muons, and electrons?
Several methods to detect this particle rely on its interactions with isotopes, including its conversion of gallium-71 to germanium-71 and chlorine-37 to radioactive argon, the latter of which is used at the Homestake gold mine observatory in South Dakota.
neutrinos