What Happens When Differing Quantities of Matter and Antimatter Annihilate?

[trini]

i have a question, if i took matter and antimatter of differing quantities, so for example, i took a carbon atom made up of matter and a boron atom made of antimatter, when they annhialate, would i be left with a hydrogen atom made of matter plus energy?

 

[Dale]

With that much energy released you probably would not wind with an atom at all, but yes, in the end there would be some matter left over and a lot of energy, assuming complete annihilation of the antimatter.

 

[Bob S]

The only stable hadron (in isolation) is a proton. Hadron number is conserved (as far as we know). With carbon-12 and anti-boron-11, assuming complete annihilation, you will have one proton and one electron left, after the dust settles. With carbon-12 and anti-boron-10, two protons and two electrons, with a very small probability of one deuteron.
Bob S

 

[Vanadium 50]

Hadron number is conserved (as far as we know).

No it's not. $\rho \rightarrow \pi \pi$. One goes in, two go out.

 

[matt_crouch]

just out of interest if matter can be converted to energy can energy be converted to matter. I was asked this and i think the answer is yes but i can't think of a situation where it would happen

 

[fahim_naruto]

will the remaining matter absorb the energy?

 

[Bob S]

No it's not. $\rho \rightarrow \pi \pi$. One goes in, two go out.

Sorry- I meant baryon number is conserved. The only stable hadron (in isolation) is a proton.
bob s

 

[Bob S]

just out of interest if matter can be converted to energy can energy be converted to matter. I was asked this and i think the answer is yes but i can't think of a situation where it would happen

Fermilab is creating protons and antiprotons at the rate of ~3 x 10¹¹ from energy per hour. See left panel in
http://www-bd.fnal.gov/notifyservlet/www?project=outside
Right now, Fermilab is creating about 28 milliamps (circulating current) of antiprotons per hour.
Bob S