RESULTS ON CHARMED MESON DECAY FROM THE WA82 EXPERIMENT AT THE CERN OMEGA-SPECTROMETER

The WA82 experiment has collected data with the Omega(') spectrometer at the CERN SPS. Its aim was a high-statistics study of charm hadropro duction, using a silicon microstrip vertex detector and a trigger on i mpact parameter. WA82 is also studying rare decay modes for charm. Lat est results on non-leptonic charmed meson decay branching ratios are p resented here, including the study of doubly Cabibbo-suppressed modes for D+. This analysis, using the particle identification provided by a Ring Imaging CHerenkov detector (RICH), gives an indication for a new decay mode, D+ --> K- K+K+. An upper limit for the D+ --> K(+)pi(-)pi (+) mode branching ratio is also obtained.