Particle interactions #2 Flashcards
Five examples of exchange particles
Gluons
Photons
W^+
W^-
z^0
Graviton
When is weak nuclear force involved
When a neutron changes to a proton/proton to neutron
What is weak nuclear force responsible for
Radioactive decay
What is weak nuclear force weaker than
Strong nuclear force
Electromagnetic force
What is weak nuclear force stronger than
Gravity
What is weak nuclear force carried by
W^+ and W^- bosons
What do bosons cause
Neutrinos and antineutrinos to interact
What is the rest mass of W^+ and W^-
0
What is the range of W^+ and W^-
Very short
The incoming and outcoming charges of a Feynman diagram
Sum of them must be equal
Charges of W^+ and W^-
W^+ is positive
W^- is negative
The four roles of exchange particles in an interaction
Transfer momentum
Transfer energy
Transfer force
Sometimes transfers charge (W^+ and W^-)
Charge flowing into a junction is equal to
Charge flowing out of a junction