Hadronic Final States and Spectroscopy in ep Collisions at HERA

Authors :: Schmitz, Carsten
Publication Year :: 2007
Abstract: Recent results on spectroscopy and the measurement of hadronic final states in ep collisions from the H1 and ZEUS collaborations are presented using data sets with an integrated luminosity between 44 and 121 pb^-1 collected during the HERA I running period. Besides a search for resonant states which could be interpreted as pentaquarks, a study of charged particle momentum spectra in the Breit frame and a measurement of neutral strange hadron production is shown. Furthermore two recent measurements of prompt photons are presented and compared with pQCD calculations. The measurements are performed in photoproduction with a four-momentum transfer squared Q^2\sim 0 GeV^2 or in deep inelastic scattering at Q^2>1 GeV^2.<br />Comment: To appear in the proceedings of the 42nd Rencontres de Moriond session devoted to QCD and hadronic interactions, La Thuile (Italy), March 17-24 2007