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weak interaction

weak interaction

1 8.1
A basic force that makes some tiny particles change and causes some radioactive decay
  • noun
  • /wiːk ˌɪntəˈrækʃən/
  • Specialized
translation icon : interacción débil
  • In particle physics, understanding the weak interaction helps explain phenomena such as beta decay.
  • weak interaction between quarks
  • mediate the weak interaction
  • weak interactions of particles

No, there is no theoretical maximum unless you assume that the particles interact with roughly standard model weak interaction cross sections.

Examples

  • The discovery of the weak interaction changed our comprehension of fundamental forces in the universe.

  • In solar neutrino experiments, the weak interactions have a longer time to make their effects felt than in terrestrial experiments.

    Academic text (1990)
  • And the puzzle is why is it that the weak interactions give such slow decay rates?

  • But demonstrating the variation for the weak interactions required an experimental tour de force.

    Academic text (2005)
  • The strong and weak interactions operate only over minuscule distances.

    Academic text (1991)
  • In contrast, experiments in 1956 demonstrated that the weak interaction is not invariant under such parity inversion (P).

    Blog text (33)
  • Enrico Fermi's 1934 theory of beta decay formulated the weak interaction in analogy to the electromagnetic interaction.

    Academic text (2004)
  • The conversion of a neutron and proton into a deuteron and a photon is now searching for evidence of weak interactions between quarks in protons and neutrons.

    Academic text (2012)
  • The weak interaction is responsible for the decay of certain particles, like the neutron.

Synonyms

weak force
vsweak interaction
  • Specialized
2 8.3

A basic interaction in nature that causes some radioactive decay and acts on particles like neutrinos

specifies the same force and names its carriers as intermediate vector bosons

How Strong

strong interaction
  • Specialized
8.9
interaction
  • Specialized
35 6.7
weak interaction
  • Specialized
1 8.1

Surface Forms

Morphology

weak + interaction

The compound is compositionally an adjective + noun meaning 'an interaction that is weak', so a learner who knows the common senses of 'weak' and 'interaction' will grasp the literal idea of a less strong or slight interaction. However, the specific technical sense — that this is one of the fundamental particle physics forces (mediated by W/Z bosons and tied to radioactive decay) — is specialized and not fully predictable from everyday vocabulary, so the transparency is partial.

Etymology

Weak interaction gets its name from the words weak and interaction: imagine two tiny particles almost whispering to each other, so their contact is small and happens only sometimes instead of a strong push. That's why the term means the kind of force that causes small changes in particles, like the radioactivity called 'beta decay'.