Feynman Diagrams Flashcards
1
Q
Beta minus decay (hadron level)
A
2
Q
Beta minus decay (quark level)
A
3
Q
Beta plus decay (hadron level)
A
4
Q
Beta plus decay (quark level)
A
Up quark becomes a down quark, creating a positron and an electron neutrino via a W+ particle
5
Q
Electron capture
A
W⁺ → shows movement of charge
This process is known as inverse ß⁻ decay, although a neutrino is emitted, not an antineutrino
6
Q
Electron-proton collision
A
The exchange particle is W⁻, so it goes ←
This mechanism occurs with isolated protons in a collision, not protons in a nucleus (unlike in electron capture)
7
Q
Antineutrino-proton collision
A
8
Q
Neutrino-neutron collision
A
W⁺ but the charge goes ←, as the neutron becomes positive and the neutrino becomes negative
