A "Theory" of the Universe

[uncool]

Matter and antimatter don't quite make 0. they make two (or more) photons, usually gamma rays. These are extremely high high energy light beams. However, the energy is equal to the energy made by the masses of the matter and antimatter.

-Uncool-

[Rebel.esd]

Wasn't there a release a while back which proposed that early on matter outbalanced antimatter because of anti-neutrinos becoming neutrinos? I'll look for it.

[Severian]

Wasn't there a release a while back which proposed that early on matter outbalanced antimatter because of anti-neutrinos becoming neutrinos? I'll look for it.

 

There is no such thing as antineutrinos. They are Majoranna particles.

[Ophiolite]

For those of you too lazy to google, a Majorana particle (note it is spelt with a single 'n') is its own anti-particle.

[swansont]

There is no such thing as antineutrinos. They are Majoranna particles.

 

I thought the standard model did not treat them this way. Has neutrinoless double beta decay been observed?

[Severian]

To be fair, it isn't really known yet whether neutrinos are Majorana or not.

 

Neutrinoless double beta decay is proportional to the mass of the neutrino, so it doesn't happen in the Standard Model which assumes neutrinos to be massless.

 

In the 'new' SM with non-zero neutrino masses, double beta decay would be very small simply because the masses are very small, and this is presumably why it has not been observed.

[Deviation]

OK Guys I agree U all r smart and I am dumb , But I owe U all my explaination to this

http://scienceforums.net/forums/showpost.php?p=174162&postcount=2

 

And I far as I remember when Matter Antimatter mate eachother there is tremendous amounts of energy release, so where did that came from in the first place ?

[Rebel.esd]

E=mc^2