All the particles in the Standard Model have chirality except neutrinos which are only left handed. And the weak force only effect left handed particle. Enter the proposed sterile neutrino to explain this break in symmetry. But the latest ...See moreAll the particles in the Standard Model have chirality except neutrinos which are only left handed. And the weak force only effect left handed particle. Enter the proposed sterile neutrino to explain this break in symmetry. But the latest experiment challenges its existence. Written by
David Foss
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