Neutrino Annihilation

  • Thread starter jazznaz
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  • #1
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Homework Statement



Is the following process a valid interaction?

[tex]\nu_\mu \bar{\nu}_e \rightarrow e^+ \mu[/tex]

Homework Equations



none

The Attempt at a Solution



I'm not sure whether lepton number must be conserved at each vertex, or just for the overall process. I can draw a Feynmann diagram with a Z0 boson as the exchange particle, but I'm not convinced that this is correct.
 

Answers and Replies

  • #2
vela
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Yes, it is, but it's not mediated by the Z boson.
 
  • #3
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In that case, it must be a photon?
 
  • #4
vela
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No. If the process involves neutrinos, it's a weak interaction.
 
  • #5
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I think I'm being distracted by thinking that there's no transfer of charge between the initial and final states.

Had another go, and now have a diagram that looks like a scattering process with the exchange of a W+ boson.
 
  • #6
vela
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Sounds right!
 
  • #7
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Thanks!
 

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