Neutrinos are the “ghost particles” in the Standard Model of Particle Physics. This is because they interact weakly with ordinary matter. An interesting property of neutrinos is that they can change their identities or “flavors” when they interact. Neutrinos are the “ghost particles” in the Standard Model of Particle Physics. This is because they interact weakly with ordinary matter. An interesting property of neutrinos is that they can change their identities or “flavors” when they interact. General Physics Quantum Physics Phys.org – latest science and technology news stories