Photoproduction physics at HERA

This report contains five articles about experiments on photoproduction at the HERA storage ring. These concern total cross sections, the behavior and the parton structure of the photon, as well as hard scattering in diffractive dissociation of quasi-real photons. (HSI)Available from TIB Hannover: RA 2999(94-215) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekSIGLEDEGerman

New results from the H1 experiment at HERA on photoproduction, deep inelastic scattering and searches for new particles

Quasi-real photoproduction has been studied in the H1 detector, based on the low Q"2 ep-scattering at HERA. Results are presented on measurements of the total photoproduction cross section, elastic #rho#"0 production #gamma#p #-># #rho#"0p and inclusive charged particle spectra in the central region from inelastic #gamma#p interactions. Although difficult to interpret theoretically, low and medium p _p_e_r_p_e_n_d_i_c_u_l_a_r _t_o photoproduction processes nevertheless provide essential information for the understanding and complete description of #gamma#p interactions at high energies. (orig.)SIGLEAvailable from TIB Hannover: RA 2999(93-077) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekDEGerman