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Pair production is the creation of an elementary particle and its antiparticle out of a neutral boson, typically a photon, but sometimes a gluon.
7
votes
Accepted
Is it possible to produce images of pair production in home-made cloud chamber?
Basics
You need to
be able to generate a pair-creation event and
be able to image it well enough to know what it was.
Getting a pair conversion event
Pair creation calls for the highest energy …
1
vote
momentum conservation in particle-antiparticle creation
Being "near by" means that there is (unavoidably) an interaction between them.
The problem is no longer
$$ \gamma \to e^+ + e^- \,,$$
but
$$ \gamma + A \to e^+ + e^- + A\,,$$
(here $A$ represents th …
6
votes
Pair production of neutrinos
There is no tree level vertex for a neutrino scattering off of a photon, so you have two choices:
Weak Drell-Yan if the progenitors are leptons. That is $$l + \bar{l} \to Z^0 \to \nu + \bar{\nu} \,. …
3
votes
Pair annihilation - can annihilation be moderated?
in a similar manner in which a fission reaction is moderated
I think you are confusing ideas here, and it is leading you to ask a somewhat nonsensical question. The individual nuclear fission ev …