Tau (particle) Tau (particle) The tau (τ), also called the tau lepton, tau particle, or tauon, is an elementary particle similar to the electron, with negative electric charge and a spin of. Together with the electron, the muon, and the three neutrinos, it is a lepton. Like all elementary particles with half-integer spin, the tau has a corresponding antiparticle of opposite charge but equal mass and spin, which in the tau's case is the antitau (also called the "positive tau"). Tau particles are denoted by and the antitau by . Tau leptons have a lifetime of and a mass of (compared to
George (given name) to a variety of regional forms. George (given name) George is a widespread masculine given name, derived from the Greek () through the Latin . Its popularity is due to the widespread veneration of the Christian military saint Saint George (George of Lydda, d. 303). The Greek name as given in the Roman era may ultimately derive from the name of Zeus Georgos, an epithet of Zeus in his aspect as the god of crops. Even though the saint has been considered a patron saint of England since the 15th or 16th century, the given name was rarely given in