Pl. Frabetti et al., 1ST OBSERVATION OF THE SIGMA-PI-C BARYON AND ITS BRANCHING RATIO RELATIVE TO THE SIGMA+PI+PI- MODE(PI+ DECAY MODE OF THE LAMBDA), Physics letters. Section B, 328(1-2), 1994, pp. 193-198
We report the first observation (103 +/- 17 events) of the decay LAMBD
A(c)+ --> SIGMA-pi+pi+ and the charge conjugate. A measurement of the
relative branching ratio GAMMA(LAMBDA(c)+ --> SIGMA-pi+pi+)/GAMMA(LAMB
DA(c)+ --> SIGMA+pi+pi-) = 0.53 +/- 0.15 (stat) +/- 0.07 (sys) is also
presented.