That is, how many different states are there assuming you distinguish two particles as different if they have different quantum numbers or different masses.(adsbygoogle = window.adsbygoogle || []).push({});

For example, the [tex]\Delta^-(1232),\Delta^0(1232),\Delta^+(1232),\Delta^{++}(1232)[/tex] are four different states. And these are all different from the four different charge states of the Delta(1600) states and the four Delta(1920) states. The other Delta resonances are not [tex]P_{33}[/tex], but just these give 12 states already.

There are a total of 22 mass multiplets called "Delta" which gives a total of 22x4 =88 states. But these are all particles. Double them for antiparticles and we're up to 176.

The nucleons (i.e. N and P) also have 22 mass multiplets but there are only 2 states in each (with charge 0 or +1, like the neutron and proton) so, counting anti-particles this gives 88 states.

So I'm up to 176+88 = 264 and I've only covered two letters, [tex]\Delta, N[/tex]. Does anybody know how many there are in total?

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# How many mesons and baryons are there?

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