Fundamental particles Flashcards

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1
Q

Name all exchange particles

A

W+ Bosons W- Bosons Z Bosons Higgs Boson photons and gluons

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2
Q

Name all leptons

A

Electrons, muons and neutrinos

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3
Q

Name all baryons

A

Protons and neutrons

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4
Q

Name all mesons

A

K+ K- K0 π+ π- π0

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5
Q

What are the differences between mesons and baryons

A

Baryons contain 3 quarks whereas mesons contain a quark and antiquark pair

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6
Q

What do pi mesons contain

A

A quark and antiquark pair

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7
Q

What do K mesons contain

A

A quark/antiquark and a strange quark

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8
Q

What do K mesons contain

A

A quark/antiquark and a strange quark

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9
Q

Strong force exchange particle

A

Pions between hadrons and gluons between quarks

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10
Q

Electromagnetic exchange particle

A

Photon

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11
Q

Weak force exchange particles

A

Z and W bosons

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12
Q

Quark baryon number

A

+1/3

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13
Q

Anti-quark baryon number

A

-1/3

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14
Q

Which particles have a lepton number of zero

A

All hadrons and exchange particles

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15
Q

Which particles have a baryon number of zero

A

Mesons, leptons and exchange particles

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16
Q

Which particles have a strangeness of zero

A

Any particles with no strange quarks

17
Q

Difference between gluons and pions

A

Both are for the strong force, however gluons are between quarks and pions are between hadrons. Gluons have no mass whereas pions do.

18
Q

What quantities are conserved in all interactions

A

Energy
Momentum
Charge (Q)
Baryon number
Lepton number

Kinetic conserved in an ELASTIC COLLISION
Strangeness conserved in ALL EXCEPT WEAK INTERACTIONS