Spectra and correlations of $\Lambda$ and $\bar\Lambda$ produced in 340-GeV/c $\Sigma^{-}$ + C and 260-GeV/c n + C interactions

Spectra and correlations of $\Lambda$ and $\bar\Lambda$ produced in 340-GeV/c $\Sigma^{-}$ + C and 260-GeV/c n + C interactions

We have measured the production of strange baryons and antibaryons in 340-GeV/c Σ−+C and 260-GeV/c n+C interactions. The single xF distributions show the expected leading particle effect, and the single pt2 distributions show a distinct nonthermal behavior. The xF distributions of Λ-Λ pairs indicate...

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Veröffentlicht in:Physical review. C 2002, Vol.65
Hauptverfasser: Adamovich, M.I., Alexandrov, Yu.A., Baranov, S.P., Barberis, D., Beck, M., Berat, C., Beusch, W., Boss, M., Brons, S., Brueckner, W., Buenerd, M., Busch, C., Buescher, C., Charignon, F., Chauvin, J., Chudakov, E.A., Dersch, U., Dropmann, F., Engelfried, J., Faller, F., Fournier, A., Gerassimov, S.G., Godbersen, M., Grafstroem, P., Haller, T., Heidrich, M., Hubbard, E., Hurst, R.B., Koenigsmann, K., Konorov, I., Keller, N., Martens, K., Martin, P., Masciocchi, S., Michaels, R., Mueller, U., Neeb, H., Newbold, D., Newsom, C., Paul, S., Pochodzalla, J., Potashnikova, I., Povh, B., Ransome, R.D., Ren, Zhuoxiang, 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., Waelcher, T., Waelder, G., Werding, R., Wittmann, E., Zavertyaev, M.V.
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Sprache:eng
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High Energy Physics - Experiment
Physics
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Zusammenfassung:We have measured the production of strange baryons and antibaryons in 340-GeV/c Σ−+C and 260-GeV/c n+C interactions. The single xF distributions show the expected leading particle effect, and the single pt2 distributions show a distinct nonthermal behavior. The xF distributions of Λ-Λ pairs indicate two different phase space distributions for the two coincident baryons. On the other hand two Λ¯’s show identical distributions. Momentum conservation during the formation process may represent a significant source for the observed behavior. (APS)
ISSN:2469-9985
2469-9993
DOI:10.1103/PhysRevC.65.042202