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.

 

[sardar]

for your question. The study of neutrinos and antineutrinos is a fascinating area of research in the field of particle physics. After the big bang, a hot and dense gas consisting of many elementary particles, including neutrinos and antineutrinos, was produced. As the universe expanded and cooled, these particles decoupled from the rest of the matter and radiation, forming a universal gas.

Neutrinos are known to interact very weakly with matter, leading to their ability to travel long distances without being affected. This also means that they are difficult to detect. However, scientists have been able to observe and study neutrinos through various experiments, such as those using neutrino detectors deep underground.

Antineutrinos, on the other hand, have the same properties as neutrinos, except for their opposite charge. They are also difficult to detect, but scientists have been able to observe them through their interactions with matter, such as in nuclear reactors.

So to answer your question, the antineutrinos are still present in the universe, but they are much more difficult to detect compared to neutrinos. They are believed to have formed a universal gas similar to neutrinos, but further research and experiments are needed to fully understand their properties and behavior. Thank you for your interest in this topic.