Neutrinos of the Standard Model (IMAGE) DOE/Fermi National Accelerator Laboratory Caption The building blocks of matter include three types of neutrinos, known as electron neutrino, muon neutrino and tau neutrino. For more than a decade, physicists have seen evidence that these neutrinos can transform into each other. Credit Fermilab Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.