Difference between revisions of "Weak Nuclear Interaction"

Latest revision as of 10:05, 1 August 2019

Key Stage 5

Meaning

The weak nuclear interaction is the mechanism governing how hadrons and leptons affect one another.

About The Weak Nuclear Interaction

The weak nuclear interaction is one of the 4 fundamental interactions governing how subatomic particless affect one another.

The weak nuclear interaction causes the decay of particles into other, more stable, subatomic particless.

The weak nuclear interaction can allow neutrons to decay into protons.

The weak nuclear interaction is mediated by the W-boson and Z-boson.

The effective range of the weak nuclear interaction is smaller than the diameter of a proton.

Examples

W-boson interactions for nucleons.

This Feynman Diagram shows the weak interaction in which a neutron decays into a proton.	This Feynman Diagram shows the weak interaction in which a proton decays into a neutron via positron emission.	This Feynman Diagram shows the weak interaction in which a proton captures an electron to become a neutron.

W-boson interactions for quarks

This Feynman Diagram shows the weak interaction in which a down-quark decays into an up-quark. This appears as a neutron becoming a proton, electron and an antielectron-neutrino.	This Feynman Diagram shows the weak interaction in which an up-quark decays into a down-quark via positron emission. This appears as a proton becoming a neutron, positron and electron-neutrino.	This Feynman Diagram shows the weak interaction in which an up-quark captures an electron to become a neutron. This appears as a ground state electron becoming an electron-neutrino while a proton becomes a neutron.

@@ Line 9: / Line 9: @@
 : The '''weak nuclear interaction''' is mediated by the [[W-boson]] and [[Z-boson]].
 : The effective range of the '''weak nuclear interaction''' is smaller than the [[diameter]] of a [[proton]].
+===Examples===
+{| class="wikitable"
+|+W-boson interactions for [[nucleon]]s.
+|[[File:FeynmanDiagramNeutronDecay.png|center|200px]]
+|[[File:FeynmanDiagramPositronEmission.png|center|200px]]
+|[[File:FeynmanDiagramElectronCapture.png|center|200px]]
+|-
+| style="height:20px; width:200px; text-align:center;" |This [[Feynman Diagram]] shows the [[Weak Nuclear Interaction|weak interaction]] in which a [[neutron]] [[Radioactive Decay|decays]] into a [[proton]].
+| style="height:20px; width:200px; text-align:center;" |This [[Feynman Diagram]] shows the [[Weak Nuclear Interaction|weak interaction]] in which a [[proton]] [[Radioactive Decay|decays]] into a [[neutron]] via [[Positron Emission|positron emission]].
+| style="height:20px; width:200px; text-align:center;" |This [[Feynman Diagram]] shows the [[Weak Nuclear Interaction|weak interaction]] in which a [[proton]] [[Electron Capture|captures]] an [[electron]] to become a [[neutron]].
+|}
+{| class="wikitable"
+|+W-boson interactions for [[quark]]s
+|[[File:FeynmanDiagramDownDecay.png|center|200px]]
+|[[File:FeynmanDiagramUpDecay.png|center|200px]]
+|[[File:FeynmanDiagramQuarkElectronCapture.png|center|200px]]
+|-
+| style="height:20px; width:200px; text-align:center;" |This [[Feynman Diagram]] shows the [[Weak Nuclear Interaction|weak interaction]] in which a [[down-quark]] [[Radioactive Decay|decays]] into an [[up-quark]]. This appears as a [[neutron]] becoming a [[proton]], [[electron]] and an [[antielectron-neutrino]].
+| style="height:20px; width:200px; text-align:center;" |This [[Feynman Diagram]] shows the [[Weak Nuclear Interaction|weak interaction]] in which an [[up-quark]] [[Radioactive Decay|decays]] into a [[down-quark]] via [[Positron Emission|positron emission]]. This appears as a [[proton]] becoming a [[neutron]], [[positron]] and [[electron-neutrino]].
+| style="height:20px; width:200px; text-align:center;" |This [[Feynman Diagram]] shows the [[Weak Nuclear Interaction|weak interaction]] in which an [[up-quark]] [[Electron Capture|captures]] an [[electron]] to become a [[neutron]]. This appears as a [[Ground State|ground state]] [[electron]] becoming an [[electron-neutrino]] while a [[proton]] becomes a [[neutron]].
+|}