Neutrino decay before electroweak breaking

  • #1

Summary:

Neutrinos don't likely get their mass from the Higgs field.Before the electroweak breaking all other particles were massless but neutrinos shouldn't be massless.

Main Question or Discussion Point

Most scientists believe neutrinos don't get their mass from the Higgs field due to their tiny mass compared to the next lightest particle(electron).During the electroweak epoch the rest particles were massless but neutrinos shouldn't be.

The neutrinos would then decay to the other massless ( i guess if the electroweak interaction had some of the properties of the weak interaction)
particles.

How old can neutrinos be in the current state they are? When was their assosciate mass field turned on?
 

Answers and Replies

  • #2
Vanadium 50
Staff Emeritus
Science Advisor
Education Advisor
2019 Award
24,801
7,812
Neutrinos don't likely get their mass from the Higgs field.
Nobody knows that. They might.

Before the electroweak breaking all other particles were massless
Nobody knows that either. What is known for certain is that in the early universe the particles' rest masses were small compared to their energies so mass was irrelevant.

The neutrinos would then decay to the other massless ...particles
Unlikely. If there were a phase transition, it would occur on a very short time scale, much shorter than any neutrino lifetime. (Indeed, likely lifetimes would be loinger than the present age of the universe)
 
  • Informative
Likes etotheipi

Related Threads on Neutrino decay before electroweak breaking

Replies
2
Views
2K
Replies
3
Views
2K
  • Last Post
Replies
13
Views
4K
  • Last Post
Replies
5
Views
4K
  • Last Post
Replies
4
Views
4K
  • Last Post
Replies
2
Views
706
Replies
11
Views
1K
Replies
1
Views
1K
Replies
10
Views
1K
  • Last Post
Replies
1
Views
2K
Top