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Particle Physics > Lecture 1 > Flashcards

Lecture 1 Flashcards

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1
Q

What spin do Fermions have? (Half or Full integer)

A

Half integer spin

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2
Q

What spin do Bosons have? (Half or full integer)

A

Full integer spin

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3
Q

Name the two types of Fermions

A

Quarks and Leptons

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4
Q

Name the six types of quarks

A

up, down, charm, strange, top, bottom

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5
Q

Name the six types of Leptons

A

electron, electron neutrino, muon, muon neutrino, tauon, tauon neutrino

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6
Q

Name the Gauge Bosons:

A

Z0, W+, W-, photon, gluon, Higgs

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7
Q

What is the charge of each quark?

A

down = -1/3, up= +2/3, strange = -1/3, charm = +2/3, bottom = -1/3, top = +2/3

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8
Q

What is the charge of each lepton?

A

electron, muon, tauon = -1, neutrinos = 0

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9
Q

What are the charges of the Bosons?

A

Z0 = 0, W+ = 1, W- = -1, photon = 0, gluon = 0, Higgs = 0

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10
Q

If Spin = 1, how many states are there and what are they?

A

1, -1, 0

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11
Q

Higgs have S = 0, what is ms = ?

A

ms = 0

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12
Q

What does a straight line of a Feynman diagram represent?

A

Fermion (quark/ leptop

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13
Q

What is a wavy line in a Feynman diagram?

A

Gauge boson, W+/-, Z, photon

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14
Q

What is a curly line in a Feynman diagram?

A

Gluon

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15
Q

What is a dashed line in a Feynman diagram?

A

Higgs Boson

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16
Q

The EM force only interact with particle with ……

A

charge

17
Q

The Strong force interacts with all …..

A

Quarks

18
Q

The Weak force interacts with all….

A

Fermions

19
Q

What ‘power’ does the W boson have?

A

Flavour changing

20
Q

True or False: Every SM particle has an anti-matter equivilent?

A

True. Change the sign. (Electron -> Position. W+ -> W-)

21
Q

WHat are Hadrons?

A

Composite Particles. 3 quarks. They are fermions, s=1/2,3/2,….,. Eg. proton (uud), neutron (ddu)

22
Q

What are Mesons?

A

Composite Particles: 1 quark, 1 anti-quark. eg. pions: pi+ (u,anti-d), They are bosons (S=1,2,3,…

Particle Physics (6 decks)

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