A tau lepton {mass 1.??? GeWci decays with a lifetime oi one is in its rest trarne. In the laboratory, a tau lepton is produced with an energy of 50 Belt. How far, on average, does it travel before decaying? {i-lint: there are two etffecta, time dilation and the velocity. You can get the gamma factor from the total energy and the mace} A new particle with mass eon GeWcE is produced at rest in the laboratory. If it decays to two top guark [mace 1?2 GeWcEi. what is the momentum of each top quark