In addition the experiment made a contribution to studies of rare decays of neutral kaons. Also kaons and baryons may be created. The neutrinos from subsequent decays of pions and kaons form the neutrino beam. Having MI enables discrimination between muons and kaons. There must be then two different neutral kaons, differing by two units of strangeness. The coupling to the nucleon would be the same as the coupling to the kaons. The primary example of this phenomenon is the mixing of neutral kaons. The other members of this octet are the four kaons and the eta meson. However, we instead observe that it decays most frequently into 2 kaons. Semileptonic decays of neutral kaons have been used to study kaon oscillations. In the other hand kaons can produce also pions via the decay mode formula 8. The technique is to collide protons with a fixed target, producing charged pions or kaons. Since neutral kaons carry strangeness, they cannot be their own antiparticles. Pions and kaons are not stable, thus they may decay into other particles. Examples of mesons commonly produced in particle physics experiments include pions and kaons.