Neutrino-AntiNeutrino Collisions: EM Field?

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Discussion Overview

The discussion revolves around the interactions between neutrinos and anti-neutrinos, specifically focusing on whether these collisions can produce photons and the nature of the fields involved. Participants explore theoretical implications, particle interactions, and the role of electromagnetic fields in these processes.

Discussion Character

  • Debate/contested
  • Technical explanation
  • Conceptual clarification

Main Points Raised

  • Some participants propose that neutrino-anti-neutrino collisions can produce photons, suggesting that these photons arise from an electromagnetic field.
  • Others argue against the production of photons in such collisions, stating that neutron-anti-neutron collisions yield a variety of hadronic particles instead.
  • A participant mentions that neutrinos couple only to vector bosons, implying that Z° pairs can be created, which decay into hadronic and leptonic final states.
  • One participant asserts that photons can indeed be produced in neutrino-anti-neutrino collisions, referencing a box diagram that illustrates this process.
  • Another participant questions the source of the electromagnetic field responsible for photon production in these collisions.
  • There is a discussion about the nature of box diagrams, with some noting that they are one-loop processes and therefore highly suppressed.
  • Participants acknowledge that including loop diagrams allows for a broader range of interactions, though this may complicate the discussion.

Areas of Agreement / Disagreement

Participants do not reach a consensus on whether neutrino-anti-neutrino collisions can produce photons, with multiple competing views presented throughout the discussion.

Contextual Notes

The discussion includes unresolved questions about the assumptions underlying the interactions and the definitions of the fields involved. The implications of loop diagrams and their suppression in particle interactions are also noted but not fully resolved.

cragar
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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 .
 
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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.
 
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.
 
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.
 
thats what i thougt , so where is the EM field that produces these photons.
 
cragar said:
thats what i thougt , so where is the EM field that produces these photons.

from the loop induced vector boson and the fermions
 
Vanadium 50 said:
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.

A box diagramm is one-loop and therefore highly suppressed.
 
tom.stoer said:
A box diagramm is one-loop and therefore highly suppressed.

yes, almost anything is allowed if one includes loops
 
tom.stoer said:
A box diagramm is one-loop and therefore highly suppressed.

And that's a bigger problem than colliding beams of neutrinos and anti-neutrinos??
 
  • #10
Vanadium 50 said:
And that's a bigger problem than colliding beams of neutrinos and anti-neutrinos??
Of course not, the whole discussion is not really practice-oriented :-)
 

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