- #1

- 970

- 3

## Main Question or Discussion Point

I keep on hearing that there are hundreds of hadrons, or even more ambiguous a zoo of hadrons, but for some reason I've never seen an exact answer.

Given that there are 6 quarks, it seems you can form 6*6*6=216 baryons. Including anti-baryons, that would be 2*216=432 baryons. Also there are two sets, spin 1/2 and spin 3/2, so there are actually 864 baryons?

For mesons it seems you can form 6*6=36, including anti-mesons.

Now I know mesons come in spin 0 and spin 1, so that doubles it to 2*36=72

So are there 864+72=936 hadrons and anti-hadrons, which would imply just 936/2=468 hadrons?

Also why are spin 0 mesons different from spin 1 mesons, and spin 1/2 baryons different from spin 3/2 baryons? Aren't they the same particles, just with different total spin?

Given that there are 6 quarks, it seems you can form 6*6*6=216 baryons. Including anti-baryons, that would be 2*216=432 baryons. Also there are two sets, spin 1/2 and spin 3/2, so there are actually 864 baryons?

For mesons it seems you can form 6*6=36, including anti-mesons.

Now I know mesons come in spin 0 and spin 1, so that doubles it to 2*36=72

So are there 864+72=936 hadrons and anti-hadrons, which would imply just 936/2=468 hadrons?

Also why are spin 0 mesons different from spin 1 mesons, and spin 1/2 baryons different from spin 3/2 baryons? Aren't they the same particles, just with different total spin?