Timeline for Neutrino annihilation and bosons
Current License: CC BY-SA 3.0
14 events
| when toggle format | what | by | license | comment | |
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| May 19, 2021 at 2:23 | comment | added | PM 2Ring | The annihilation of a neutrino-anti-neutrino pair into photons and the neutrino density in the universe. Sorry, it's paywalled (Elsevier). | |
| Jul 18, 2016 at 2:38 | comment | added | Michael | Wait, so what happens if two low energy particles: neutrino and anti-neutrino - collide? Do they not annihilate? | |
| Jul 22, 2014 at 15:46 | comment | added | pfnuesel | The coupling of the Higgs is proportional to the neutrino mass, not to the Higgs mass, I improved my answer to make this more clear. And yes, we don't know the mechanism how the neutrinos receive mass. I simply assumed it's the same Yukawa coupling as for other elementary particles. | |
| Jul 22, 2014 at 15:43 | history | edited | pfnuesel | CC BY-SA 3.0 |
added 17 characters in body
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| Jul 22, 2014 at 14:51 | comment | added | Melquíades | @pfnuesel I think your statement about the Higgs coupling to neutrinos is imprecise. First of all, the Higgs coupling to neutrinos has nothing to do with the fact that the Higgs is much heavier than neutrinos. Second, how do we know that the corresponding coupling is small? We don't even known the mechanism responsible for neutrino's mass. If it was a simple Yukawa interaction, then you would be right. But remember that a right-handed neutrino has never been observed in nature. | |
| Jul 21, 2014 at 20:10 | comment | added | pfnuesel | The $W^0$ boson from the $W$ triplet is not the same as the $Z$ boson. Neither masses nor couplings are correct. The $Z$ boson is a linear combination of $W^0$ and the singlet state $B^0$. Specifically: $Z = -\sin{\theta_W} B^0 + \cos{\theta_W} W^0$, where $\theta_W$ is the Weinberg angle. | |
| Jul 21, 2014 at 19:59 | comment | added | Joshua | I'm confused. I thought W0 = Z. | |
| Jul 21, 2014 at 17:18 | comment | added | Emilio Pisanty | Are annihilations into W$^0$ bosons specifically forbidden? | |
| Jul 21, 2014 at 16:24 | history | rollback | innisfree |
Rollback to Revision 1
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| S Jul 21, 2014 at 16:23 | history | suggested | peterh | CC BY-SA 3.0 |
Majorana particales are the same as their antiparticles
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| Jul 21, 2014 at 16:11 | review | Suggested edits | |||
| S Jul 21, 2014 at 16:23 | |||||
| Jul 21, 2014 at 16:07 | vote | accept | Gerard | ||
| Jul 21, 2014 at 15:02 | comment | added | fqq | Photons can be produced (e.g. the Z boson couples to charged stuff, or neutrinos couple directly to Ws). Of course such amplitudes are probably ridicolous. | |
| Jul 21, 2014 at 13:36 | history | answered | pfnuesel | CC BY-SA 3.0 |