Do neutrinos and antineutrinos annihilate?

  • Thread starter Thread starter pierce15
  • Start date Start date
  • Tags Tags
    neutrinos
Click For Summary
The discussion centers on whether neutrinos and antineutrinos can annihilate, with participants noting that while they theoretically can, the likelihood of such interactions is extremely low due to neutrinos' weak interactions with matter. The annihilation process is suggested to occur via Z boson exchange, but the energy requirements and complexity of the interactions make them rare. There is debate over the implications of observing or not observing neutrino-antineutrino annihilation, with some arguing it could challenge the Standard Model of particle physics. The conversation also touches on the practical significance of these interactions, especially in high-density environments like supernovae. Overall, while the annihilation of neutrinos and antineutrinos is theoretically possible, it remains largely unobserved and is considered a low-probability event.
  • #31
ChrisVer said:
I think the Z--->gamma gamma by a triangle fermion loop doesn't work...

Right. It does not. The EWK SM is the theory that has no all-neutral couplings.
 
  • Like
Likes TEFLing

Similar threads

Undergrad New Upper Bound of Neutrino Mass
  • · Replies 11 ·
Replies
11
Views
3K
Undergrad Majorana Neutrinos: Different Physics than Oscillation
  • · Replies 221 ·
8
Replies
221
Views
12K
Undergrad Majorana Neutrinos: Evidence of Particle vs. Antiparticle?
  • · Replies 5 ·
Replies
5
Views
2K
Undergrad Unraveling Neutrino Confusion: Ettore Majorana's Theory
  • · Replies 8 ·
Replies
8
Views
2K
Undergrad What is the electric charge of a neutrino?
  • · Replies 6 ·
Replies
6
Views
2K
Undergrad What happens when two Neutrinos collide?
  • · Replies 4 ·
Replies
4
Views
626
High School What do we know about neutrino-neutrino scattering?
  • · Replies 22 ·
Replies
22
Views
3K
Undergrad Where are these neutrino masses coming from?
  • · Replies 2 ·
Replies
2
Views
3K
Undergrad New ultra-high energy Neutrino
  • · Replies 2 ·
Replies
2
Views
2K
Undergrad Emission of neutrinos and antineutrinos
  • · Replies 12 ·
Replies
12
Views
2K