A measurement of $\Xi^{-}$ polarization in inclusive production by $\Sigma^{-}$ of 340 GeV/c in C and Cu targets

We have measured the polarization of Xi /sup -/ hyperons produced inclusively by a Sigma /sup -/ beam of 340 GeV/c momentum in nuclear targets. From a sample of 880000 identified Xi /sup -/ decays, polarizations were determined in the range 0<x/sub F/<0.9 and p/sub t /<or=1.6 GeV/c. The pol...

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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, Th, Heidrich, M, Hubbard, E, Hurst, R B, Keller, N, Königsmann, K C, Konorov, I, Martens, K, Martin, P, Masciocchi, S, Michaels, R, Müller, U, Neeb, H, Newbold, D, Newsom, C, Paul, S, Pochodzalla, J, Povh, B, Ransome, R, Ren, Z, Epherre-Rey-Campagnolle, Marcelle, Rosner, G, Rossi, L, Rudolph, H, Schmitt, L, Siebert, H W, Simon, A, Smith, V J, Thilmann, O, Trombini, A, Vesin, E, Volkemer, B, Vorwalter, K, Walcher, T, Wälder, G, Werding, R, Wittmann, E, Zavertyaev, M V
Lenguaje:eng
Publicado: 2004
Materias:
Particle Physics - Experiment
Acceso en línea:https://dx.doi.org/10.1140/epjc/s2004-01965-3
http://cds.cern.ch/record/912969
Descripción
Sumario:We have measured the polarization of Xi /sup -/ hyperons produced inclusively by a Sigma /sup -/ beam of 340 GeV/c momentum in nuclear targets. From a sample of 880000 identified Xi /sup -/ decays, polarizations were determined in the range 0<x/sub F/<0.9 and p/sub t /<or=1.6 GeV/c. The polarization w.r.t. the production normal is negative for x/sub F/>or=0.3. At fixed values of x/sub F/, its magnitude increases with p/sub t/ to maximum values which reach about 20% at large x/sub F/.

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