Charge asymmetries for D, $D_{s}$ and $\Lambda_{c}$ production in $\Sigma^{-}$ -nucleus interactions at 340 GeV/c

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CERN experiment WA89 has studied charmed particles produced by a Sigma /sup -/ beam at 340 GeV/c on nuclear targets. Production of particles which have light quarks in common with the beam is compared to production of those which do $9 not. Considerable production asymmetries between D/sup -/ and D/...

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Detalles Bibliográficos
Autores principales: Adamovich, M I, Alexandrov, Yu A, 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/409776
Descripción
Sumario:CERN experiment WA89 has studied charmed particles produced by a Sigma /sup -/ beam at 340 GeV/c on nuclear targets. Production of particles which have light quarks in common with the beam is compared to production of those which do $9 not. Considerable production asymmetries between D/sup -/ and D/sup +/, D/sub s//sup -/ and D/sub s//sup +/ and Lambda /sub c/ and Lambda /sub c/ are observed. The results are compared with pion beam data and with theoretical $9 calculations. (30 refs).

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