A study of charm quark production in the NOMAD event generator

Although constructed primarily to aid in the search for neutrino oscillations, NOMAD, a counter experiment exposed to a νm beam at the CERN SPS, is capable of making significant contributions to the study of charm quark production in νm Deep Inelastic Scattering (DIS) processes. The analysis of such events, however, is dependent upon Monte Carlo simulations of the event kinematics and hence it is essential to understand the behaviour of such simulations. This talk compares data on charm production in the dimuon channel generated by the NOMAD Event Generator (NEGLIB) for an anti-neutrino beam with data collected in the CDHS experiment which ran at CERN in the period 1977-1980. Overall the two sets of data compare well, although some marked differences are observed. Several possible reasons are proposed and discussed