Consider e+e* -> q+q* in the centre of mass frame. Where I am using star for antiparticle. the quark and anti quark pair cannot exist alone due to color confinement so they form 2 jets that will go in opposite directions (to conserve momenta). Where do these jets come from? Do the quarks emit gluons that then form more quarks? Or are they spontaneously produced from the vaccum or something? Also the jets can be mesons or baryons but if they form baryons then one jet has to be baryons and the other has to be anti-baryons to conserve baryon number correct?