weak interaction

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Related to weak interaction: strong interaction, electromagnetic interaction

weak interaction

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


weak force

(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

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 ?
Theory states that fermions with a weak interaction should pair up at the temperature at which they become superconductive.
One of the qualities these particles must possess is really weak interaction with normal matter, since dark matter, despite its overwhelming presence in the universe, can be detected only through inference and not by direct observation.
The standard RTN picture supposes a weak interaction of trapped charge with its local surroundings?
Second, the weak interaction acts over a relatively long time scale, much longer than the time that particles have to interact with one another when crushed against each other in a collider.
We found significant weak interaction effects of entropie measurement (absolute entropy applied to an event series E(x) = [[SIGMA].
Interaction profile of Cry2Ac11 with ALP showed 2 salt bridges, 21 hydrogen bonds and 224 other interactions including non- bonded contacts predicting it as a weak interaction.
To realize all these constructions, a new weak interaction turns the electron/positron in the neutrino/antineutrino and vice versa, so introducing a doublet of the weak interaction, since its role in the gauge needs just two charge states.
Considering the certain immiscibility between the hydrophobic nature of the PPG and PTMG 2000 segment of WUPU and the hydrophilic silica particles, we suppose that the weak interaction mainly results from the hydrogen bonding interaction between the silanol group and the urethane groups in the hard segment domains.
Even for a weak interaction, it is unnecessary to raise the concentration of the analyte in order to enhance complex formation and signal intensity.
The free volume decreases and internal pressure increases with an increase in molar concentration, indicating that there is a weak interaction between solute and solvent molecules.
For example, between strong interaction and weak interaction there exists intermediate interaction, namely neutral (neutrosophic) strong-weak fundamental interaction (NSW fundamental interaction), it neither strong interaction nor weak interaction, but something in between.
Tissue loss during immunohistochemical staining procedures may occur due to weak interaction of a tissue sample with glass surfaces.