Nowadays, the accepted model of elementary particles is the known as Standard Model, which consists of quarks and leptons. Only the up and down quarks form the hadrons of ordinary matter. The other quarks, as the strange one, only appear in the colliding machines when the center of mass energy of the reaction is much larger than the mass of the strange hadron. Since strange mesons and baryons produced are not present at the beginning of a coll...
CHF 107.00
