A \(\pi\)-meson is a particle that decays into a muon and a massless particle. The \(\pi\)-meson has a rest mass energy of 139.6 MeV, and the muon has a rest mass energy of 105.7 MeV. Suppose the \(\pi\)-meson is at rest and all of the missing mass goes into the muon’s kinetic energy. How fast will the muon move?
THE HEART OF THE MATTER ● the lighter chemical elements are the most abundant on earth ○ the heavier (gold) = more rare ● both space and time came out of the Big Bang ● string/loop of energy is the one basic particle ● gravity doesn’t fit or work well with quantum theory ● string theory = only theory so far that reconciles Quantum Theory and gravity ○ doesn’t mean that its correct ● each particle is a different note or vibration mode of the same elemental string ● one string can vibrate in different ways to produce a whole series of particles with wildly different properties ● as many as 7 extra dimensions and dozens of new particles must be added ● extra dimensions coiled up everywhere around us