semileptonic decay

{{Short description|Hadron decay process into both leptons and hadrons}}

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In particle physics the semileptonic decay of a hadron is a decay caused by the weak force in which one lepton (and the corresponding neutrino) is produced in addition to one or more hadrons. An example for this can be

::{{SubatomicParticle|Kaon0}} → {{SubatomicParticle|Electron}} + {{SubatomicParticle|Electron antineutrino}} + {{SubatomicParticle|Pion+}}

This is to be contrasted with purely hadronic decays, such as {{SubatomicParticle|Kaon0}} → {{SubatomicParticle|Pion+}} + {{SubatomicParticle|Pion-}}, which are also mediated by the weak force.

Semileptonic decays of neutral kaons have been used to study kaon oscillations.