Antineutrinos After Big Bang: Where Are They?

[tut_einstein]

Right after the big bang a gas consisting of many elementary particles, including neutrinos and antineutrinos was produced. I know that the neutrinos decoupled and are believed to form a universal gas presently at about 2K. What happened to the anti-neutrinos?

Thanks

 

[Drakkith]

Actually one of the major questions in cosmology is what happened to all the antimatter of ALL types that should have been produced after the big bang. Why is there more matter than antimatter? I'm not sure if we have a good answer yet.

 

[Chronos]

The current hypothesis is symetry breaking is the 'bad guy'.

 

[Chalnoth]

Right after the big bang a gas consisting of many elementary particles, including neutrinos and antineutrinos was produced. I know that the neutrinos decoupled and are believed to form a universal gas presently at about 2K. What happened to the anti-neutrinos?

Thanks

When people say neutrinos, you can expect they mean anti-neutrinos as well. The neutrinos and anti-neutrinos would have been produced in nearly equal amounts.