b-meson - exceedingly short-lived meson

boson - any particle that obeys Bose-Einstein statistics but not the Pauli exclusion principle; all nuclei with an even mass number are bosons

hadron - any elementary particle that interacts strongly with other particles

J particle, psi particle - a neutral meson with a large mass

K particle, k-meson, kaon, kappa-meson - an unstable meson produced as the result of a high-energy particle collision

pi-meson, pion - a meson involved in holding the nucleus together; produced as the result of high-energy particle collision