particle interaction diagrams Flashcards
1
Q
in a Feynman diagram what are the axises
A
y-axis = time
x-axis = space
2
Q
what does the squiggly line show
A
an exchange particle
3
Q
what are the straight arrows for
A
other particles
4
Q
what does a collision diagram show
A
two incoming particles
one exchange particle
outgoing particles
5
Q
compare electron-proton collision and electron capture
A
exactly the same
but have different exchange particles
6
Q
What is the exchange particle for electron capture
A
W+ as there is a t in capture
7
Q
What is the exchange particle for electron-proton collision
A
W- as there is an i and n
8
Q
where does a positive boson point
A
away from a positively charged particle
9
Q
where does a negative boson point
A
away from a negatively charged particle
10
Q
what interactions have only one incoming particle
A
decay
