The dissimilar masses of the rho and pi varieties suggest the masses of these particles do not correlate to the masses of their components.
Exotic ones include a composite of two hyperons as well as glueballs. The dissimilar masses of the rho and pi varieties suggest the masses of these particles do not correlate to the masses of their components. The generators of the group that governs their interactions are one-half times the eight Gell-Mann matrices. That group, SU(3), describes quantum chromodynamics, so called because the bosons that hold them together transmit color charge. Typically composed of two or three quarks, these are, FTP, what class of subatomic particles that includes the J/psi particle, the neutron, and the proton.
Exotic ones include a composite of two hyperons as well as glueballs.
{hadrons}