Particle Interactions

Which one of the following quantum numbers does NOT need to be conserved for an interaction to happen?
1. Charge
2. Lepton number
3. Momentum
4. Strangeness
At CERN, it was suggested that neutrinos could travel faster than light. Which one of these statements is most likely to be correct concerning these observations?
1. Neutrinos are strange little brutes, of which we know almost nothing.
2. The data recorded are not reliable.
3. Anything can travel faster than light, given the right circumstances.
4. The report was some bad science fiction made up by the press.
On a Feynman diagram, the vertical axis represents:
1. time;
2. manner;
3. place;
4. voltage,
In a Feynman diagram, the horizontal axis represents:
1. Time;
2. Manner;
3. Space;
4. Current
In electron capture, which one of these happens?
1. A neutron is turned into a proton.
2. A neutron is turned into a positron.
3. A proton is turned into a positron
4. A proton is turned into a neutron.
Which particle is the exchange particle in electron capture?
1. W+
2. W-
3. Z
4. Virtual photon.
In beta minus decay, an electron is emitted. What other particle is emitted?
1. Electron neutrino
2. Proton
3. Electron anti-neutrino.
4. Muon
Neutrinos are difficult to observe because:
1. they rarely interact with matter;
2. they have a charge that is not +1 or -1 e;
3. they are hard to catch;
4. they can inflict a nasty bite.
Planets attract each other by exchanging:
1. photons;
2. neutrinos;
3. gluons;
4. gravitons
Two gamma photons interact to cause a pair production event. Which statement is correct?
1. They make a proton and an antiproton in the presence of a nucleus.
2. They make a positron and an electron in the presence of a nucleus. When far away, they pass through each other without interacting.
3. They make an anti-proton and a positron in the presence of a nucleus.
4. They make a positron and an electron whether they are in the presence of a nucleus or well away from a nucleus.

Particle Interactions

Quiz