Observation ofΛc+ decays to Λπ+π0, Σ0π+, Σ0π+π0, and Σ0π−π+π+☆

Abstract We have observed the previously unseen decay modes Λπ + π 0 , Σ 0 π + π 0 and Σ 0 π − π + π + of the charmed baryon Λ c + , as well as Λ c + → Σ 0 π + observed previously by ARGUS. The branching ratios for these four decay modes relative to Λ c + → pK − π + are measured to be 0.73 ±0.09± 0.16, 0.36 ±0.09±0.10, 0.21±0.05±0.05, and 0.21±0.02 ±0.04, respectively. Using the recent CLEO measurement of the branching ratio for Λ c + → pK − π + , these modes account for 6% of Λ c + decays.