Production and Decay of the Lambda_c Charmed Baryon from Fermilab E791

Abstract

Results are presented for the 500 GeV/c pion production asymmetry and polarization of the Lambda_c (anti-Lanbda_c) charmed baryon from Fermilab experiment E791. An analysis of the decay to the p anti-K pi final state is described. Resonant sub-channel fractions and phases are given and possible resonant effects in the low mass p anti-K system discussed. Significant decay to Lambda_c --> Delta++ K- establishes for the first time the importance of a W exchange mechanism in charmed baryon decay.Comment: 9th International Conference on Hadron Spectroscopy (Hadron 2001), Protvino, Russia, 25 Aug - 1 Sep 2001, LaTeX, 19 file