2 Quarks and Leptons Flashcards

1
Q

Quarks

A

hadrons are made of quarks

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2
Q

strange number

A

K- -1

K+ +1

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3
Q

Lepton number

A

electron 1
muon 1
taon 1
electron neutrnio -1
muon neutrino -1
taon neutrino -1

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4
Q

baryon number

A

proton 1
neutron 1
antiproton -1
antineutron -1

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5
Q

conserved

A
charge
baryon number
energy 
mass
lepton number
strangeness
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6
Q

matter

A

Hadron

-Baryon -meason
proton (uud) pie +,0,-
neutron (ddu) koan +,0,-

lepton

  • electron
  • antielectron
  • muon
  • antimuon
  • taon
  • antitaon
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7
Q
strong force
(Strong interaction)
A

exchange particle = Gluon

effects = protons and neutrons in the nucleus

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8
Q
weak force
( weak interaction)
A

exchange particle = W+ , W-

effects = Lepton (decay)
β- , β+

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9
Q

Electrostatic force

A

exchange particle = virtual photon

effects = anything with a charge

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10
Q

Gravity

A

exchange particle = Graviton (Higgs boson)

effects = anything with mass

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11
Q

muon

A

a lepton that is negatively charged and has a greater rest mass than an electron

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12
Q

pion (Pi meson)

A

a reason that consists of an up or down quark and an up and down antiquark

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13
Q

kaon (k meson)

A

a reason that consists of a strange quark or antiquark and another quark / antiquark

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14
Q

antimunon

A

antiparticle of the muon

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15
Q

hadron

A

partciles and antiparticle that can interact through the strong interaction

Baryons
Mesons

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16
Q

lepton

A

electrons, positrons, muons/antimuons, neutrinos and their antiparticles are classified as leptons because they cannot interact through the strong interaction. they interact through the weak interaction and, in the case of electrons, positrons, muons/antimuons through the electromagnetic interaction

17
Q

baryon

A

a hardon consisting of three quarks

18
Q

meason

A

a hardon consisting of a quark and an antiquark

19
Q

antiquark

A

antiparticle of a quark

20
Q

quark

A

protons and neutrons and other hardens consist of quarks. there are six types of quarks up, down, strange, charmed, top and bottom.

21
Q

Baryon is a quantum number

A

Theoretical expression for the valve of some quantised property of a subatomic particle

22
Q

What is the only stable baryon and every thing eventually decays into it

23
Q

Kaon can decay into

24
Q

Strange particles are particles that are produced through the strong interaction and decay through the …….

A

Weak interaction

25
Is strangeness is conservation in strong interactions
Yes
26
Cosmic ray showers
Source of high energy particles including pions and kaons
27
Observation of stray tracks in cloud chamber
Alpha thick and straight | Beta whipsy and thin
28
Observing high energy particles
Use of a geiger counter to detect a cosmic ray shower