Study of decays of the Lambda c

We report measurements of the decays {Lambda}{sub {ital c}}{sup +}{r arrow}p{bar K} {sup 0}, {Lambda}{sub {ital c}}{sup +}{r arrow}p{bar K} {sup 0}{pi}{sup +}{pi}{sup {minus}}, {Lambda}{sub {ital c}}{sup +}{r arrow}{Lambda}{sup 0}{pi}{sup +}, and {Lambda}{sub {ital c}}{sup +}{r arrow}{Lambda}{sup 0}{pi}{sup +}{pi}{sup +}{pi}{sup {minus}} from Fermilab photoproduction experiment E691. We have measured the relative branching ratios {ital B}({Lambda}{sub {ital c}}{sup +}{r arrow}p{bar K}{sup 0})/{ital B} ({Lambda}{sub {ital c}}{sup +}{r arrow}pK{sup {minus}}{pi}{sup +})=0.55{plus minus}0.17{plus minus}0.14, {ital B}({Lambda}{sub {ital c}}{sup +}{r arrow}{Lambda}{sup 0}{pi}{sup +}{pi}{sup +}{pi}{sup {minus}}0)/ {ital B}({Lambda}{sub {ital c}}{sup +}{r arrow}{ital pK}{sup {minus}}{pi}{sup +})=0.82{plus minus}0.29{plus minus}0.27, {ital B}({Lambda}{sub {ital c}}{sup +}{r arrow}{Lambda}{sup 0}{pi}{sup +})/{ital B}({Lambda}{sub {ital c}}{sup +}{r arrow}{ital pK}{sup {minus}}{pi}{sup +}){lt}0.33 at 90% confidence level, and {ital B}({Lambda}{sub {ital c}}{sup +}{r arrow}p{bar K} {sup 0}{pi}{sup +}{pi}{sup {minus}})/{ital B}({Lambda}{sub {ital c}}{sup +}{r arrow}{ital pK}{sup {minus}}{pi}{sup +}){lt}1.7 at 90% confidence level.