Multiplicity structure in inclusive and diffractive deep inelastic e+p collisions at HERA

摘要

The multiplicity structure of the hadronic final state system X produced in diffractive deep-inelastic e+p collisions of the type e+p e+XY, in which the photon dissociation system X is separated from a leading low mass baryonic state Y by a large rapidity gap, has been measured. Results are presented on charged particle multiplicity distributions and rapidity spectra. We investigate the kinematical dependences of the mean multiplicity and the particle density in rapidity space on the diffractive variables. The comparison with non-diffractive deep-inelastic e+p collisions has been performed.