Particle Physics: Leptons

Question 1

Name the four flavours of leptons

Answer 1

Electron, muon, electron neutrino, muon neutrino (+ antiparticle variations)

Question 2

A lepton is a fundamental particle. What does this mean

Answer 2

They have no internal structure and cannot be broken down

Question 3

Which forces do leptons experience

Answer 3

Weak, gravity, and (if charged) electromagnetic

Question 4

In terms of leptons, how must an interaction be conserved

Answer 4

The number of leptons in the electron branch and number of leptons in the muon branch must be conserved.

Question 5

If an interaction involved both hadron and leptons, which interaction is responsible

Answer 5

Weak if quarks change flavour,
Strong if not.