Towards a model independent approach to fragmentation functions


We show that the difference cross sections in unpolarized SIDIS e+N → e+h+X and pp hadron production p + p → h + X determine independently in a model independent way, in any order in QCD, the two FFs: D u andD h−h̄ d , h = π , K or a sum over charged hadrons. If bothK andK s are measured, then e e → K+X, e+N → e+K +X and p+ p → K +X present independent… (More)