Mi. Adamovich et al., FIRST OBSERVATION OF THE XI(-)PI(+) DECAY MODE OF THE XI(0)(1690) HYPERON, The European Physical Journal. C: Particles and Fields, 5(4), 1998, pp. 621-624
We report the first observation of the Xi(-) pi(+) scattering mode of
the Xi(0)(1690); confirming the existence of this resonance. The Xi(0)
(1690) were produced by Sigma(-) of 345 GeV/e mean momentum of copper
and carbon targets. The mass and width are close to those observed ear
lier for the Xi(-)(1690) in the Lambda K- decay channel. The product o
f inclusive production cross section and branching ratio is given rela
tive to that of the Xi(0)(1530).