Search for the exotic $\Xi^{--}(1860)$ Resonance in 340GeV/c $\Sigma^-$-Nucleus Interactions

We report on a high statistics search for the $\Xi^{--}(1860)$ resonance in $\Sigma^-$-nucleus collisions at 340GeV/c. No evidence for this resonance is found in our data sample which contains 676000 $\Xi^-$ candidates above background. For the decay channel $\Xi^{--}(1860) \to \Xi^-\pi^-$ and the k...

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Detalles Bibliográficos
Autores principales: Adamovich, M.I., Alexandrov, Yu.A., Baranov, S.P., Barberis, D., Beck, M., Berat, C., Beusch, W., Boss, M., Brons, S., Bruckner, W., Buenerd, M., Busch, C., Buscher, C., Charignon, F., Chauvin, J., Chudakov, E.A., Dersch, U., Dropmann, F., Engelfried, J., Faller, F., Fournier, A., Gerassimov, S.G., Godbersen, M., Grafstrom, P., Haller, Th., Heidrich, M., Hubbard, E., Hurst, R.B., Konigsmann, Kay, Konorov, I., Keller, N., Martens, K., Martin, Ph., Masciocchi, S., Michaels, R., Muller, U., Neeb, H., Newbold, D., Newsom, C., Paul, S., Pochodzalla, J., Potashnikova, I., Povh, B., Ransome, R., Ren, Z., Rey-Campagnolle, M., Rosner, G., Rossi, L., Rudolph, H., Scheel, C., Schmitt, L., Siebert, H.-W., Simon, A., Smith, V.J., Thilmann, O., Trombini, A., Vesin, E., Volkemer, B., Vorwalter, K., Walcher, Th., Walder, G., Werding, R., Wittmann, E., Zavertyaev, M.V.
Lenguaje:eng
Publicado: 2004
Materias:
Particle Physics - Experiment
Nuclear Physics
Acceso en línea:https://dx.doi.org/10.1103/PhysRevC.70.022201
http://cds.cern.ch/record/735446
Descripción
Sumario:We report on a high statistics search for the $\Xi^{--}(1860)$ resonance in $\Sigma^-$-nucleus collisions at 340GeV/c. No evidence for this resonance is found in our data sample which contains 676000 $\Xi^-$ candidates above background. For the decay channel $\Xi^{--}(1860) \to \Xi^-\pi^-$ and the kinematic range 0.15$<x_F<$0.9 we find a 3$\sigma$ upper limit for the production cross section of 3.1 and 3.5 $\mu$b per nucleon for reactions with carbon and copper, respectively.

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