Production of $\Xi^*$ resonances in $\Sigma ^{-}$ induced reactions at 345 GeV/c

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We report on a measurement of the differential and total cross sections of inclusive production of Xi * resonances in Sigma /sup -/- nucleus collisions at 345 GeV/c. The cross section for inclusive Xi /sub 1530//sup 0/ production is about a factor of 5 below that of Xi /sub 1320//sup -/ hyperons. Th...

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Detalles Bibliográficos
Autores principales: Adamovich, M I, Alexandrov, Yu A, Baranov, S P, Barberis, D, Beck, M, Bérat, C, Beusch, Werner, Boss, M, Brons, S, Brückner, W, Buénerd, M, Busch, C, Büscher, C, Charignon, F, Chauvin, J, Chudakov, E A, Dersch, U, Dropmann, F, Engelfried, J, Faller, F, Fournier, A, Gerassimov, S G, Godbersen, M, Grafström, P, Haller, T, Heidrich, M, Hubbard, E L, Hurst, R B, Königsmann, K C, Konorov, I, Keller, N, Martens, K, Martin, P, Masciocchi, S, Michaels, R, Müller, U, Neeb, H, Newbold, D, Newsom, C R, Paul, S, Pochodzalla, J, Potashnikova, I K, Povh, B, Ransome, R D, Ren, Z, Epherre-Rey-Campagnolle, Marcelle, Rosner, G, Rossi, L, Rudolph, H, Scheel, C V, Schmitt, L, Siebert, Hans-Wolfgang, Simon, A, Smith, V, Thilmann, O, Trombini, A, Vesin, E, Volkemer, B, Vorwalter, K, Walcher, T, Wälder, G, Werding, R, Witmann, E, Zavertyaev, M V
Lenguaje:eng
Publicado: 1999
Materias:
Particle Physics - Experiment
Acceso en línea:http://cds.cern.ch/record/426222
Descripción
Sumario:We report on a measurement of the differential and total cross sections of inclusive production of Xi * resonances in Sigma /sup -/- nucleus collisions at 345 GeV/c. The cross section for inclusive Xi /sub 1530//sup 0/ production is about a factor of 5 below that of Xi /sub 1320//sup -/ hyperons. The products of cross section and branching ratio for the observed channels Xi /sub 1690//sup 0/ to Xi /sup -/ pi /sup +/, Xi /sub 1820//sup -/ to Xi /sub 1530//sup 0/ pi /sup -/ and Xi /sub 1950//sup -/ to Xi /sub 1530//sup 0/ pi /sup -/ are lower by yet another order of magnitude. The Xi /sub 1820//sup -/ and Xi /sub 1950//sup -/ resonances show significantly harder x/sub F / and p/sub t/ distributions than Xi /sup -/ and Xi /sub 1530//sup 0/ hyperons. A comparison of the x/sub F/-distribution to PYTHIA and QGSM predictions provides only a partial agreement. (29 refs).

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