Particle Interactions

Question 1

What are the 4 fundamental forces

Answer 1

Electromagnetism
Strong nuclear force
Gravity
Weak nuclear force

Question 2

What are the carrier particles for electromagnetism

Answer 2

virtual photons

Question 3

What are the carrier particles for strong nuclear force

Answer 3

pions

Question 4

What are the carrier particles for weak nuclear force

Answer 4

W+ and W- bosons

Question 5

What is electron capture

Answer 5

inner shell electron is drawn into nucleus and cpmbines with proton to become a neutron
emitting a neutrino

Question 6

What is the feynman diagram like for beta - decay

Answer 6

Udd (quark) neutron becomes a
Udu (quark) proton
during reaction w- boson is produced which becomes a electron and anti electron neutrino

Question 7

What is the feynman diagram like for beta + decay

Answer 7

Udu (quark) proton becomes a
Udd (quark) neutron
during reaction w+ boson is produced which becomes a positron and electron neutrino

Question 8

What is the feynman diagram like for electron capture

Answer 8

proton and electron entering from either side
w+ boson mediating between them travelling to electron
neutron on proton side
electron neutrino on electron side

Question 9

What is the feynman diagram like for electron proton collision

Answer 9

Proton and electron entering from either side
w- boson travelling from electron to proton
neutron on proton side
electron neutrino on electron side

Question 10

What are the 3 pion structures

Answer 10

pi + = up, anti down
pi- = down, anti up
pi0 = up, anti up / down, anti down

Question 11

What classification of particle is a pion

Answer 11

meson