particle interactions Flashcards

(21 cards)

1
Q

what are the four fundamental forces

A

weak nuclear force
strong nuclear force (strong interaction)
gravity
electromagnetic

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2
Q

what is the strong force felt by

A

quarks (hadrons)

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3
Q

what is the weak force felt by

A

all particles

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4
Q

what is the electromagnetic force felt by

A

any charged particles

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5
Q

what is the gravity force felt by

A

any particle with mass

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6
Q

what is the exchange particle for the strong force

A

gluon (pion)

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7
Q

what is the exchange particle for weak force

A

W boson (W+ or W-)

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8
Q

what is the exchange particle for the electromagnetic force

A

virtual photon

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9
Q

what is the exchange particle for gravity

A

graviton

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10
Q

what are the forces between particles caused / mediated by

A

exchange particles

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11
Q

What does the exchange particles carry between particles experiencing the force

A

energy and momentum

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12
Q

what are sometimes of the exchanged particles called and why

A

virtual particles becuase they cannot be detected directly

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13
Q

what force is responsible for beta decay /electron capture and electron proton collision

A

weak nuclear force

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14
Q

what is the equation for beta minus decay

A

N —> P + e- + -Ve

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15
Q

What is the equation for beta plus decay

A

P —> N + e+ + Ve

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16
Q

what is the equation for electron capture

A

P + e- —> n + Ve

17
Q

what is the equation for electron proton collision

A

P + e- —> n + Ve

18
Q

which boson is responsible for electron capture

19
Q

which boson is responsible for electron proton collision

20
Q

what interactions does the Z boson mediate

A

Neutral weak interactions like neutrino scattering

21
Q

What charge is the Z boson

A

electrically neutral