Hadronic Final States at HERA

Abstract

The hadronic final state in deep-inelastic ep scattering (DIS) is investigated at HERA. Charged particle production is measured as a function of the pseudorapidity and the transverse momentum, thus testing models of hadroproduction. Scaled momentum distributions of K 0 S and Λ are measured as a functions of the hardscale Q 2 and are used to test predictions based on fragmentation functions. The production of very forward photons and neutrons is also measured, probing hadroproduction from the proton remnant.