Inverse Beta Decay

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Inverse beta decay is the most commonly used process to detect electron neutrinos. It takes place when a proton (p) in the nucleus of an atom interacts with a neutrino (nubar) to produce a neutron (n) and a positron (e+). This is an example of a weak interaction—meaning that the weak nuclear force is acting on these particles—which proceeds via the exchange of a W+ boson. (Unit: 1)