The SELEX experiment (E781) is a 3-stage magnetic spectrometer for a high s
tatistics study of hadroproduction of charm baryons out to large x(F) using
650 GeV Sigma (-),pi (-) and p beams. The main features of the spectromete
r are: a high precision silicon vertex system; powerful particle identifica
tion provided by TRD and RICH; forward Lambda (s) decay spectrometer; and 3
-stage lead glass photon detector. Preliminary results on asymmetry for Lam
bda (c) produced by Sigma (-), pi (-) and p beams at x(F) > 0.2 and precise
measurements of the Lambda (c), D-0, and preliminary D-s lifetimes are pre
sented.