Particle Physics

Question 1

Hadrons

Answer 1

Interact via strong interaction ( holds nucleus together)
Not fundamental particles
Interact strong nuclear force
Decay through weak interaction

Question 2

Baryons

Answer 2

Some charges particles 
Interact via strong nuclear force and electromagnetic 
Composed of ‘qqq’ 
Decay into protons 
All unstable and decay

Question 3

Only stable Baryon

Answer 3

Proton

Question 4

Mesons

Answer 4

Not fundamental
Interact via strong nuclear force, electromagnetic and gravitational
Composed of quark and anti quark
Do not include protons in decay

Question 5

Leptons

Answer 5

Fundamental particles

Interact via weak nuclear force, electromagnetic and gravitational

Question 6

The 4 leptons

Answer 6

Electron
Mu minus
Electron neutrino
Muon neutrino

Question 7

Strangeness of leptons

Answer 7

0

Question 8

What is a neutron

Answer 8

A DUD

Question 9

Example of baryons

Answer 9

Proton
Neutron
Lambda
Omega

Question 10

Specific charge equation

Answer 10

Charge/mass

Question 11

Charge of proton

Answer 11

1.6*10-19

Question 12

Proton mass

Answer 12

1.67*-27

Question 13

Electron mass

Answer 13

9.11*10-31

Question 14

Factors affecting pair production

Answer 14

Only happens if one photon has enough energy to produce that much mass

Question 15

Why are two gamma photons produced in annihilation

Answer 15

For the conservation of energy and momentum

Question 16

What is produced when a neutron decays

Answer 16

A proton an electron and an antineutrino

Question 17

Virtual photon

Answer 17

Electromagnetic interaction only affecting charges particles

Question 18

W-, W+

Answer 18

Weak interaction affecting all types of particles

Question 19

Pions

Answer 19

Strong interaction

Affecting hadrons only

Question 20

How are strange particles created

Answer 20

Created by strong interaction and decay via weak interaction
Produced in pairs