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Neutrino ?

  1. Apr 21, 2010 #1
    When a neutrino and an anti-neutrino collide they produce a photon , from what field does this photon come from. Photons are excitations of an EM field correct. or what about neutron anti-neutron collisions .
     
  2. jcsd
  3. Apr 21, 2010 #2
    no they do not produce photons if they collide....


    neutron - antineutron will create lots of different things, there are a lot of hadron - antihadron particles which can be produced.
     
  4. Apr 21, 2010 #3

    tom.stoer

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    I think we had a related discussion here; the neutrino couples only to vector bosons, so a Z° pair can be created which will eventually decay in hadronic and leptonic final states.
     
  5. Apr 21, 2010 #4

    Vanadium 50

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    You most certainly can produce photons in neutrino antineutrino collisions. You have a box diagram with a nu-nubar going in, a W on one side of the box, e's on the other 3 sides, and two photons going out.
     
  6. Apr 21, 2010 #5
    thats what i thougt , so where is the EM field that produces these photons.
     
  7. Apr 21, 2010 #6
    from the loop induced vector boson and the fermions
     
  8. Apr 21, 2010 #7

    tom.stoer

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    A box diagramm is one-loop and therefore highly suppressed.
     
  9. Apr 21, 2010 #8
    yes, almost anything is allowed if one includes loops
     
  10. Apr 21, 2010 #9

    Vanadium 50

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    And that's a bigger problem than colliding beams of neutrinos and anti-neutrinos??
     
  11. Apr 21, 2010 #10

    tom.stoer

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    Of course not, the whole discussion is not really practice-oriented :-)
     
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