
Review of Short Phrases and Links 
This Review contains major "Weak Interaction" related terms, short phrases and links grouped together in the form of Encyclopedia article.
Definitions
 The weak interaction (often called the weak force or sometimes the weak nuclear force) is one of the four fundamental interactions of nature.
 The weak interaction is the only known interaction in which parity is not conserved; it is leftright asymmetric.
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 The weak interaction is mediated by very massive (about 80 GeV) particles known as W bosons.
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 The weak interaction is caused by the exchange of W and Z bosons (the intermediate vector bosons).
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 The weak interaction is responsible, amongst other things, for radioactive decay, and is mediated by the exchange of virtual W and Z bosons.
 Interactions involving neutrinos are mediated by the weak interaction.
 The Electroweak force is a combination of Electromagnetism and weak interaction.
 Only lefthanded fermions participate in the weak interaction, while there are no righthanded neutrinos.
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 Properties The weak interaction affects all lefthanded leptons and quarks.
 There are three weak gauge bosons: W +, W −, and Z 0; these mediate the weak interaction.
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 The weak interaction even violates CP symmetry but does conserve CPT.
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 Yet, it was found that the weak interaction may violate the CP symmetry, and thus create asymmetry in the universe.
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 The temperature of the universe is high enough to merge electromagnetism and the weak interaction into a single electroweak interaction.
 Electromagnetism and weak interaction appear to be very different at everyday low energies.
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 This describes the weak interaction of quarks, controlling the transformation of quarks within one family of quarks.
 The universe has matter not antimatter, the Weak Interaction, spin, gyrotropy… and biological homochirality.
 However, the weak gauge bosons are massive, and that makes the weak interaction much weaker than electromagnetism at low energies (i.e.
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 Thus, while there are still a pair of quarks u and d that take part in the weak interaction, they are not quite the same as the strong u and d quarks.
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 For energies larger than 100 GeV the weak interaction becomes unified with the electromagnetic interaction into the electroweak interaction.
 At high energies the electromagnetic and weak interaction are unified in the electroweak interaction.
 Any of a family of elementary particles that participate in the weak interaction, including the electron, the muon, and their associated neutrinos.
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 In our modern understanding, strangeness is conserved during the strong and the electromagnetic interaction s, but not during the weak interaction s.
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 Later collaborating with Murray GellMann, the theory was of massive importance, and resulted in the discovery of a new law of nature (the weak interaction).
 The theory requires three intermediate vector bosons with mass to explain the weak interaction.
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 These are useful quantum numbers since they are conserved by both the electromagnetic and strong interactions (but not the weak interaction).
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 Conserve both protons and neutrons: The cross sections for the weak interaction are too small.
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 Even at the speed of light, the effect of the weak interaction is limited to a mere 1018 metres, which is a 1000 times smaller than an atomic nucleus.
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 The decay is as a result of the weak interaction that occurs within nucleons.
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 Decay times in this range indicate decay by the weak interaction.
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 The magnitude of flavor changing in the weak interaction is encoded into a structure called the CKM matrix.
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 The magnitude of flavour changing in the weak interaction is encoded into a structure called the CKM matrix.
 Like the other decay modes of the tauon, the hadronic decay is through the weak interaction.
 It provides interesting examples of decay since the charm quark must be transformed into a strange quark by the weak interaction in order for it to decay.
 The bottom quark can decay into either an up or charm quark via the weak interaction.
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 The weak interaction part of the standard model was formulated by Sheldon Glashow, with the Higgs mechanism added by Steven Weinberg and Abdus Salam.
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 The W and Z particles are called intermediate vector bosons and are the exchange particles for the weak interaction.
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 The conflict between this idea and experimental evidence that the weak interaction has a very short range requires further theoretical insight.
 The weak interaction (or weak force, or weak nuclear force) mediates this type of decay, and it allows for a change in the nucleus of an atom.
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 An up quark in the proton transforms into a down quark through the mediation of the weak interaction or weak force.
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 In physics, the weak nuclear force or weak interaction is one of the four fundamental forces of nature.
 The Standard Model incorporates parity violation by expressing the weak interaction as a chiral gauge interaction.
 However, in the mid1950's Chen Ning Yang and TsungDao Lee suggested that the weak interaction might violate this law.
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 He, together with Tsungdao Lee, received the 1957 Nobel prize in physics for their work on parity nonconservation of weak interaction.
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 In the Standard Model of particle physics, it forms a doublet in SU(2) with the electron neutrino, as they interact through the weak interaction.
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 See also Weak interaction, electromagnetism and gravity Standard model of particle physics and its field theoretical formulation.
 These interact via the strong interaction, electromagnetism, and also the weak interaction which allows one flavor of quark to turn into another.
 They are the electromagnetic interaction, the weak interaction and the strong interaction.
 If these weak gauge bosons were massless, the strength of the weak interaction would be the same as the electromagnetic interaction.
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 See also Weak interaction, electromagnetic interaction and gravity Standard model of particle physics and its field theoretical formulation.
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 Particles come within the range of the strong interaction before they manage to get close enough for the weak interaction to have an effect.
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 The mass of these particles gives the range of the weak interaction.
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 The parameter that fixes the strength with which the weak force couples to particles of matter in Fermi's original theory of the weak interaction.
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 The neutron decays into a proton through the weak interaction.
 This step involves the weak interaction because it involves the transmutation of one of the protons to a neutron in order to form deuterium.
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 In particle physics, weak isospin is a quantum number relating to the weak interaction, and parallels the idea of isospin under the strong interaction.
 Isolated neutral particles, notably K 0 and B 0 mesons, can spontaneously transform into their antiparticles via the weak interaction.
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 They decay via the weak interaction to an electron, two neutrinos, and sometimes other particles that have a net charge of zero (i.e.
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 They pointed out the possibility of neutron production (along with neutrinos) from an electron and a proton due to the weak interaction.
 Once the weak interaction have effectively halted, the residual number of neutrons (and neutrinos) is fixed.
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 Weak interaction Main article: Weak interaction Feynman diagram of beta decay with time flowing upwards.
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 The use of a weak interaction Feynman diagram can clarify the process.
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 Weak isospin is to the weak interaction what color charge is to the strong interaction, and what mass is to gravity.
 The weak interaction enables all lepton and quark particles and antiparticles to interchange energy, mass and charge  effectively change into each other.
 Of the four fundamental interactions electromagnetism, the strong interaction, the weak interaction and gravity, only the weak interaction breaks parity.
 The decay of the neutron is associated with a quark transformation in which a down quark is converted to an up by the weak interaction.
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 A quark or lepton can change into a different quark or lepton from another generation only by the weak interaction.
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 A quark of one flavor can transform, or decay, into a quark of a different flavor by the weak interaction.
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 Such collision can result in a weak interaction that involved a change in one of the QUARKS inside the proton.
 In QCD, there are quarks that feel both the weak interaction and the strong interaction.
 Quarks also undergo radioactive decay, meaning that they are subject to the weak interaction.
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 Due to the weakness of the weak interaction, weak decays are much slower than strong or electromagnetic decays.
 In addition, the weak interaction need not even result in the same outgoing particles as those that entered the interaction.
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 In addition to the electromagnetic and the weak interaction, it is the third known interaction between elementary particles.
Categories
 Strong Interaction
 Weak Nuclear Force
 Information > Science > Physics > Weak Force
 Manufacturing > Measurement > Force > Electromagnetism
 Bosons
Related Keywords
* Beta Decay
* Boson
* Bosons
* Electromagnetism
* Force
* Gravitation
* Half Life
* Leptons
* Weak Interactions
* Weak Nuclear Force

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