Difference between revisions of "Feynman Diagram"
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| style="height:20px; width:300px; text-align:center;" |This '''Feynman diagram''' shows the [[Weak Interaction|weak interaction]] in which a [[neutron]] [[Radioactive Decay|decays]] into a [[proton]]. | | style="height:20px; width:300px; text-align:center;" |This '''Feynman diagram''' shows the [[Weak Interaction|weak interaction]] in which a [[neutron]] [[Radioactive Decay|decays]] into a [[proton]]. | ||
| − | <math>n \ | + | <math>n \rightarrow p + \beta^- + \bar\nu_e</math> |
|- | |- | ||
|[[File:FeynmanDiagramElectronCapture.png|center|300px]] | |[[File:FeynmanDiagramElectronCapture.png|center|300px]] | ||
|[[File:FeymanDiagramUpDecay.png|center|300px]] | |[[File:FeymanDiagramUpDecay.png|center|300px]] | ||
|- | |- | ||
| − | | style="height:20px; width:300px; text-align:center;" | | + | | style="height:20px; width:300px; text-align:center;" |This '''Feynman diagram''' shows the [[Weak Interaction|weak interaction]] in which a [[proton]] [[Electron Capture|captures]] an [[electron]] to become a [[neutron]]. |
| − | | style="height:20px; width:300px; text-align:center;" | | + | |
| + | <math>p + \beta^- \rightarrow n + \nu_e</math> | ||
| + | |||
| + | | style="height:20px; width:300px; text-align:center;" |This '''Feynman diagram''' shows the [[Weak Interaction|weak interaction]] in which an [[up-quark]] [[Radioactive Decay|decays]] into a [[down-quark]], which is observed as a [[proton]] [[Radioactive Decay|decaying]] into a [[neutron]] via [[Beta Particle|beta]] emission. | ||
| + | |||
| + | <math>u \rightarrow d + \beta^+ + \nu_e</math> | ||
| + | |||
|} | |} | ||
Revision as of 18:22, 31 July 2019
Key Stage 5
Meaning
A Feynman diagram is a type of graph used to represent the interactions between subatomic particles.
About Feynman Diagrams
- Feynman diagrams have time on the y-axis and space on the z-axis.
- Feynman diagrams are used to simplify complex equations used to represent subatomic particle interactions.
Examples
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| This Feynman diagram shows the electromagnetic interaction between two protons via the virtual photon. | This Feynman diagram shows the weak interaction in which a neutron decays into a proton.
\(n \rightarrow p + \beta^- + \bar\nu_e\) |
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| This Feynman diagram shows the weak interaction in which a proton captures an electron to become a neutron.
\(p + \beta^- \rightarrow n + \nu_e\) |
This Feynman diagram shows the weak interaction in which an up-quark decays into a down-quark, which is observed as a proton decaying into a neutron via beta emission.
\(u \rightarrow d + \beta^+ + \nu_e\) |
