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Physics - Particles, quantum phenomena and electricity > Chapter 2 - Quarks and Leptons > Flashcards

Chapter 2 - Quarks and Leptons Flashcards

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0
Q

What charge(s) can a pion be?

A

+ve -ve 0

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1
Q

what is the charge of a muon?

A

-1

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2
Q

What charge(s) can a kaon be?

A

+ve -ve 0

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3
Q

What does a muon decay into?

A

electron and anti neutrino

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4
Q

what does an anti muon decay into?

A

positron and neutrino

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5
Q

What does a pion+ day into?

A

anti muon and neutrino

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6
Q

What does a pion- decay into?

A

muon and anti neutrino

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7
Q

what does a kaon+ decay into?

A

pion+ and (pion0 or pion+ and pion-)

or muon and antineutrino

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8
Q

What does a kaon- decay into?

A

pion- and (pion0 or pion- and pion+)

neutrino and anti muon

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9
Q

What does a pion0 decay into?

A

photons

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10
Q

Define the term leptons

A

Particles and antiparticles which don’t interact through strong interaction

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11
Q

Define the term hadron

A

Particles and antiparticles which interact through strong interaction

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12
Q

What do hadrons interact through if they’re charged?

A

Electromagnetic

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13
Q

Define the term baryons

A

Protons and all other hadrons that decay into protons directly or indirectly

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14
Q

What do leptons interact through if they’re charged?

A

ectromagnetic

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15
Q

What do leptons interact through?

A

Weak interaction

16
Q

What are mesons?

A

Hadrons that do not include protons in their decay products

17
Q

List the order of particles in increasing size and mass

A

electron, muon, pion, kaon, proton, neutron

18
Q

Why was strangeness invented?

A

To explain why certain reactions weren’t observed

19
Q

Outline the quark composition of a meson

A

One quark and one antiquark

20
Q

Outline the quark composition of a hadron

A

3 quarks or 3 antiquarks

21
Q

What quarks make up a neutron?

A

ddu

22
Q

What quarks make up a proton?

A

uud

23
Q

Why is the kaon strange?

A

Its produced through strong interaction but decays through the weak

24
Q

When is strangeness not conserved?

A

Through the weak interaction

25
Q

What is the quark composition of a kaon0?

A

down anti strange

26
Q

What is the quark composition of the anti-kaon0?

A

strange anti-down

27
Q

What is the quark composition of the kaon+

A

up anti-strange

28
Q

What is the quark composition of the kaon-

A

strange anti-up

29
Q

What is the quark composition of the pion-?

A

down anti-up

30
Q

What is the quark composition of the pion+?

A

up anti-down

31
Q

What is the quark composition of the pion0?

A

strange anti-strange
up anti-up
down anti-down

32
Q

What must be conserved in a reaction?

A

Baryon number, lepton number, energy, momentum, charge, (strangeness)

33
Q

What does a kaon0 decay into?

A

pion0

Physics - Particles, quantum phenomena and electricity (6 decks)

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