First observation of the Ξ- π+ decay mode of the Ξ0 (1690) hyperon

M. I. Adamovich, Yu A. Alexandrov, D. Barberis, M. Beck, C. Bérat, W. Beusch, M. Boss, S. Brons, W. Brückner, M. Buénerd, Ch Busch, Ch Büscher, F. Charignon, J. Chauvin, E. A. Chudakov', U. Dersch, F. Dropmann, J. Engelfried, F. Faller, A. FournierS. G. Gerassimov, M. Godbersen, P. Grafström, Th Haller, M. Heidrich, E. Hubbard, R. B. Hurst, K. Königsmann, I. Konorov, N. Keller, K. Martens, Ph Martin, S. Masciocchi, R. Michaels, U. Müller, H. Neeb, D. Newbold, C. Newsom, S. Paul, J. Pochodzalla, I. Potashnikova, B. Povh, Z. Ren, M. Rey-Campagnolle, G. Rosner, L. Rossi, H. Rudolph, C. Scheel, L. Schmitt, H. W. Siebert, A. Simon, V. Smith, O. Thilmann, A. Trombini, E. Vesin, B. Volkemer, K. Vorwalter, Th Walcher, G. Wälder, R. Werding, E. Wittmann, M. V. Zavertyaev

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Abstract

We report the first observation of the Ξ- π+ scattering mode of the Ξ0(1690), confirming the existence of this resonance. The Ξ0 (1690) were produced by Σ- of 345 GeV/c mean momentum of copper and carbon targets. The mass and width are close to those observed earlier for the Ξ- (1690) in the ΛK- decay channel. The product of inclusive production cross section and branching ratio is given relative to that of the Ξ0 (1530).

Original languageEnglish
Pages (from-to)621-624
Number of pages4
JournalEuropean Physical Journal C
Volume5
Issue number4
DOIs
StatePublished - 1998

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