THE STANDARD MODEL

Question 1

What do exchange particles carry/transfer?

Answer 1

Momentum
Energy
Force
Charge (only weak interactions)

Question 2

Give the four fundamental forces and their corresponding exchange particles increasing strength.

Answer 2

Gravitational - graviton.
Electromagnetic - virtual photon.
Weak - W particle.
Strong nuclear- pion

Question 3

What are Feynman Diagrams used for?

Answer 3

Used to visualise the interactions between particles.

Question 4

Will have to Memorise the four feynman diagrams separately.

Question 5

What are HADRONS?

Answer 5

Class of particle that ‘feel’ the strong force.

Question 6

What are BARYONS?

Answer 6

A Hardron that is made up of three quarks or anti quarks in the form of ANTIBARYONS.

Question 7

What are MESONS?

Answer 7

Type of Baryon that is made up of a quark anti-quark pair.
We have the pion made up of u and d quarks.
We have the kaon which has strangeness.

Question 8

What are Leptons?

Answer 8

Type of particle that does not ‘feel’ the strong force.
Have the electron and muon.

Question 9

Describe what the Conservation Rules are?

Answer 9

In any interaction the following properties are always conserved.
Charge.
Baryon Number.
Lepton Number.