Upper limits on the production rate of the decuplet baryons Δ and Σ* in e+e- annihilation at 34.4 GeV

M. Althoff, W. Braunschweig, F. J. Kirschfink, K. Lübelsmeyer, H. U. Martyn, P. Rosskamp, H. G. Sander, D. Schmitz, H. Siebke, W. Wallraff, J. Eisenmann, H. M. Fischer, H. Hartmann, A. Jocksch, G. Knop, L. Köpke, H. Kolanoski, H. Kück, V. Mertens, R. WedemeyerA. Eskreys, K. Gather, H. Hultschig, P. Joos, U. Kötz, H. Kowalski, A. Ladage, B. Löhr, D. Lüke, P. Mättig, K. H. Mess, D. Notz, R. J. Nowak, J. Pyrlik, R. Riethmüller, M. Rushton, W. Scütte, D. Trines, T. Tymieniecka, G. Wolf, Ch Xiao, G. Yekutieli, R. Fohrmann, E. Hilger, T. Kracht, H. L. Krasemann, P. Leu, E. Lohrmann, D. Pandoulas, G. Poelz, K. U. Pösnecker, P. Schmüser, B. H. Wiik, R. Beuselinck, D. M. Binnie, A. J. Campbell, P. J. Dorman, B. Foster, D. A. Garbutt, C. Jenkins, T. D. Jones, W. G. Jones, J. McCardle, J. K. Sedgbeer, J. Thomas, W. A.T.Wan Abdullah, K. W. Bell, M. G. Bowler, P. Bull, R. J. Cashmore, P. E.L. Clarke, R. Devenish, P. Grossmann, C. M. Hawkes, S. L. Lloyd, C. Youngman, G. E. Forden, J. C. Hart, J. Harvey, D. K. Hasell, D. H. Saxon, P. L. Woodworth, F. Barreiro, S. Brandt, M. Dittmar, M. Holder, G. Kreutz, B. Neumann, E. Duchovni, Y. Eisenberg, U. Karshon, G. Mikenberg, R. Mir, D. Revel, E. Ronat, A. Shapira, M. Winik, G. Baranko, A. Caldwell, M. Cherney, J. M. Izen, M. Mermikides, S. Ritz, G. Rudolph, D. Strom, M. Takashima, H. Venkataramania, E. Wicklund, Sau Lan Wu, G. Zobernig

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Abstract

Samples of ∼1,900 identified protons and ∼500 Λ have been used to search for decuplet baryon production in e+e- annihilation at a c.m. energy of 34.4 GeV. The p π+ and Λ π± invariant mass spectra contain no Δ or Σ* signals. Upper limits, at 95% confidence level, are that less than 12% of all p and less than 26% of all Λ come from the decay of doubly charged Δ and singly charged Σ* states respectively. These limits correspond to production rates of ++ and ± per event (inclusive of anti-particles). Production of the decuplet states Δ++ and Σ*± is suppressed by a factor ≳9 relative to octet baryons of the same strangeness.

Original languageEnglish (US)
Pages (from-to)181-190
Number of pages10
JournalZeitschrift für Physik C Particles and Fields
Volume26
Issue number2
DOIs
StatePublished - Jun 1984

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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    Althoff, M., Braunschweig, W., Kirschfink, F. J., Lübelsmeyer, K., Martyn, H. U., Rosskamp, P., Sander, H. G., Schmitz, D., Siebke, H., Wallraff, W., Eisenmann, J., Fischer, H. M., Hartmann, H., Jocksch, A., Knop, G., Köpke, L., Kolanoski, H., Kück, H., Mertens, V., ... Zobernig, G. (1984). Upper limits on the production rate of the decuplet baryons Δ and Σ* in e+e- annihilation at 34.4 GeV. Zeitschrift für Physik C Particles and Fields, 26(2), 181-190. https://doi.org/10.1007/BF01421753