Abstract
The SELEX experiment (E781) is 3-stage magnetic spectrometer for a high statistics study of hadroproduction of charm baryons out to large gc F using 650 Gev Σ − , π − and p beams. The main features of the spectrometer are: a high precision silicon vertex system, powerful particle identification provided by TRD and RICH, forward Λ s decay spectrometer and 3-stage lead glass photon detector. An experiment overview and description of spectrometer features are shown. Preliminary reconstructed charm states and results on Λ c , D + particles and antiparticles produced by Σ − , π − and p beams at χ F > 0.3 are presented. Asymmetry for Λ c production is also discussed.
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