Measurement of leading proton and neutron production
in deep-inelastic scattering at HERA
C. Adloff34 - et al.
Received: 7 November 1998 / Published online: 25 January 1999
Deep-inelastic scattering events with a leading baryon have been detected by the H1 experiment at HERA using a forward proton spectrometer and a forward neutron calorimeter. Semi-inclusive cross sections have been measured in the kinematic region , and baryon MeV, for events with a final-state proton with energy GeV, or a neutron with energy GeV. The measurements are used to test production models and factorization hypotheses. A Regge model of leading baryon production which consists of pion, pomeron and secondary reggeon exchanges gives an acceptable description of both semi-inclusive cross sections in the region , where is the proton beam energy. The leading neutron data are used to estimate for the first time the structure function of the pion at small Bjorken-x.