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First observation of the \(\Xi^- \pi^+\) decay mode of the \(\Xi^0(1690)\) hyperon

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Abstract.

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/c mean momentum of copper and carbon targets. The mass and width are close to those observed earlier for the \(\Xi^-\)(1690) in the \(\Lambda K^-\) decay channel. The product of inclusive production cross section and branching ratio is given relative to that of the \(\Xi^0\)(1530).

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Received: 24 October 1997 / Published online: 21 September 1998

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WA89 Collaboration., Adamovich et al., M. First observation of the \(\Xi^- \pi^+\) decay mode of the \(\Xi^0(1690)\) hyperon. Eur. Phys. J. C 5, 621–624 (1998). https://doi.org/10.1007/s100529800902

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  • DOI: https://doi.org/10.1007/s100529800902

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