8.5 The Standard Model - Leptons

Question 1

What are leptons?

Answer 1

A group of fundamental particles.

Question 2

What are the 3 base leptons?

Answer 2

electrons
muons
taus

Question 3

What are all the leptons?

Answer 3

electron positron electron neutrino(and anti)
muon anit-muon muon neutrino(and anti)
tau anti-tau tau neutrino(and anti)

Question 4

What is a neutrino?

Answer 4

a neutral subatomic particle with a mass close to zero and zero electric charge

Question 5

Which lepton has the greatest mass?

Answer 5

tau

Question 6

Which lepton has the lowest mass?

Answer 6

electron

Question 7

What is the only stable lepton?

Answer 7

electron

Question 8

What do the other 2 leptons do?

Answer 8

Decay into ordinary electrons (eventually)

Question 9

When counting lepton number in particle interactions what do we have to remember?

Answer 9

That the lepton number has to be counted separately for each lepton.

Question 10

What is the lepton number?

Answer 10

The number of leptons in a particle interaction.

Question 11

What are quarks ?

Answer 11

The subatomic building blocks of hadrons

Question 12

What is the charge on each lepton? - not neutrino or antiparticles

Answer 12

-1e

Question 13

What is a charge on each anti-lepton? - not neutrino

Answer 13

1e

Question 14

What is the charge on all neutrinos?

Answer 14

0

Question 15

What is the lepton number on leptons? - not neutrinos or antiparticles

Answer 15

1

Question 16

What is the lepton number on neutrinos?

Answer 16

1

Question 17

What is the lepton number on antileptons?

Answer 17

-1

Question 18

What is the lepton number on antineutrinos.

Answer 18

-1

Question 19

What is the symbol for an neutrino?

Answer 19

Ve Vt V(mew)

Question 20

What is the symbols for lepton.

Answer 20

e- t- (mew)-

Question 21

What are the symbols of antileptons?

Answer 21

e+ t+ (mew)+

Question 22

What are the symbols of antineutrinos.

Answer 22

V with a bar above it