tau lepton The third charged lepton (in order of increasing mass), with an electric charge of -1, a spin of ½, and a mass of 1.784 GeV. It is unstable with a lifetime of 3 × 10-13 sec. The tau lepton was first observed in 1975 in experiments carried out at SLAC (Stanford Linear Accelerator), having already been predicted in theory. Related category PARTICLE PHYSICS Also on this site: Encyclopedia of Alternative Energy & Sustainable Living Encyclopedia of History Transport Concepts & Designs (partner site) |