Classification Of Particles Flashcards

1
Q

K0

Note capital letters indicate a line above the quark

A

dS

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2
Q

K+

A

uS

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3
Q

Negative pion

A

dU

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4
Q

Neutral pion

A

uU, dD, sS

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5
Q

Positive pion

A

uD

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6
Q

K-

A

sU

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7
Q

K0 and a line above the K

A

sD

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8
Q

What are the two groups of particles?

A
  • Hadrons = interact through the strong interaction, decay through the weak interaction
  • Leptons = interaction through the weak interaction, not through the strong interaction
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9
Q

What are hadrons and leptons made out of?

A

Hadrons are made from quarks

Leptons are fundamental particles

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10
Q

Name the two types of hadrons

A

Baryon = 3 quarks

Mesons = quark, antiquark composition

Note : all baryons decay into a proton and all mesons decay into a pion

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11
Q

State 3 facts about strangeness and strange particles?

A
  • Strange particles are created via the strong interaction but decay via the weak
  • Strange particles are always produced in pairs
  • Strangeness is conserved in the strong interaction but not the weak.
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12
Q

Name 3 leptons

A

Electrons, muons and neutrinos

Note: the muon decays into an electron

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13
Q

Through what interaction does quark character change?

A

Weak interaction via beta minus or beta plus decay.

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