We hope this site will serve as a resource for all those intrigued by the mysterious neutrinos that are traveling above, below, and through us. Have a comment, question, or suggestion for the team behind All Things Neutrino? Email us. Toggle navigation. Mysteries How much does a neutrino weigh? Which neutrino is the lightest? How many flavors of neutrinos are there? Are neutrinos their own antiparticles? Are all neutrinos left-handed? Do neutrinos violate the symmetries of physics? Where do the most energetic neutrinos come from?
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The neutrino and the antineutrino are high energy elementary particles with little or no mass and are released in order to conserve energy during the decay process. Negative beta decay is far more common than positive beta decay.
This form of radioactive decay was discovered by Sir Ernest Rutherford in , although the neutrino was not observed until the s.
Beta particles have all the characteristics of electrons.
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