weak interaction

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Related to Weak nuclear interaction: Strong interactions, Fundamental forces

weak interaction

n.
1. One of the four fundamental interactions of nature, mediated by the intermediate vector bosons and acting on leptons and quarks. It is responsible for the decay of many hadrons, for the beta decay of nuclei, and for the interactions of neutrinos. The weak interaction is weaker than the strong and electromagnetic interactions, but stronger than the gravitational interaction.
2. An instance of this interaction.

weak interaction

or

weak force

n
(General Physics) physics an interaction between elementary particles that is responsible for certain decay processes, operates at distances less than about 10–15 metres, and is 1012 times weaker than the strong interaction. The weak interaction and electromagnetic interactions are now described by the unifying electroweak theory. Also called: weak nuclear interaction or weak nuclear force See interaction2, electroweak interaction

weak′ interac′tion


n.
the interaction between elementary particles and the three intermediate vector bosons that carry the weak force.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.weak interaction - (physics) an interaction between elementary particles involving neutrinos or antineutrinos that is responsible for certain kinds of radioactive decay; mediated by intermediate vector bosons
natural philosophy, physics - the science of matter and energy and their interactions; "his favorite subject was physics"
fundamental interaction, interaction - (physics) the transfer of energy between elementary particles or between an elementary particle and a field or between fields; mediated by gauge bosons
References in periodicals archive ?
Therefore, the size of the PV spin rotation is a direct measure of the strength of the weak nuclear interaction.
Electrons in atoms "feel" not only the electromagnetic force between an electron and a positively charged nucleus, but also the much smaller influence due to the weak nuclear interaction.
Those disturbing fragments of data prompted an intensive, four-year quest for evidence of a new force of nature to join the four types already known: gravity, electromagnetism, and the strong and weak nuclear interactions.