Feynman Diagrams

Question 1

What do Feynman Diagrams show?

Answer 1

They show subatomic interactions taking place, and what boson is used for the interaction

Question 2

What boson is always used in decays?

Answer 2

W+/W-

Question 3

In Feynman Diagrams, in what direction does time usually move?

Answer 3

Up or right

Question 4

How should different groups of particles be arranged in a Feynman Diagram?

Answer 4

Families such as barions and leptons should be kept together on one side of the diagram.

Question 5

What does a strong interaction look like in a Feynman Diagram?

Answer 5

The wavy line is replaced with a coiling line

Question 6

In electron capture, which particle is it from the perspective of and which boson is used?

Answer 6

The proton and W+ is used

Question 7

In electron-proton collision, which particle is it from the perspective of, and which boson is used?

Answer 7

The electron and W- is used.

Question 8

Why does electron-proton collision break the rules of Feynman Diagrams, and what is needed to fix this?

Answer 8

In this interaction, the boson moves left, opposite of the usual direction of time in Feynman Diagrams, so an arrow is needed to show the direction of movement.