Particle Questions that include Feynman Diagrams

Q5.

(a)

(i) Underline the particles in the following list that may be affected by the weak interaction:

positron
neutron
photon
neutrino
positive pion

 

(ii) Underline the particles in the following list that may be affected by the electromagnetic force.

electron
antineutrino
proton
neutral pion
negative muon

 

(4 marks)

(b) A positive muon may decay in the following way:

(i) Exchange each particle for its corresponding antiparticle and complete the equation to show how a negative muon may decay.

(ii) Give one difference and one similarity between a negative muon and an electron.

(3 marks)

(c) Complete the Feynman diagram, which represents electron capture, by labelling all the particles involved.

(3 marks)

(Total 10 marks)