Only few examples of mesons are listed above. They are strongly interacting particle, produced in reactions by the strong interaction. Mesons are made of a quark and an antiquark. They usually decay through the strong, electromagnetic or weak interaction.
For example, pions minus can be produced in reaction of nucleons:
At first, with enough energy, reaction between a proton (p) and a neutron (n) can produce a pion minus, which then dacays into muon (a lepton) and
an antineutrino. The presence of a neutrino indicate the decay occurs via the weak interaction.
Baryons Interactions: Weak, electromagnetic, strong Spin: Half integral