Proton-antiproton annihilation into neutral strange mesons

• Published in: Nuclear physics. Section B, Proceedings supplement Proceedings supplement, 1997-06, Vol.56 (1), p.291-295
• Main Authors: Ritter, J., Bertolotto, L., Buzzo, A., Debevec, P., Drijard, D., Easo, S., Eisenstein, R.A., Evangelista, C., Eyrich, W., Fearnley, T., Ferro-Luzzi, M., Fischer, H., Franz, J., Geyer, R., Hamann, N.H., Harris, P.G., Hertzog, D.W., Hughes, S.A., Johansson, A., Johansson, T., Jones, R.T., Kilian, K., Kirsebom, K., Klett, A., Korsmo, H., Lo Vetere, M., Macri, M., Marinelli, M., Moosburger, M., Mouëllic, B., Oelert, W., Ohlsson, S., Palano, A., Passaggio, S., Perreau, J.-M., Pia, M.G., Pomp, S., Price, M., Reimer, P.E., Robutti, E., Röhrich, K., Rook, M., Sefzick, T., Rössle, E., Santroni, A., Schmitt, H., Steinkamp, O., Stinzing, F., Stugu, B., Tayloe, R., Tscheulin, M., Urban, H.J., Wirth, H., Zipse, H.
• Format: Article
• Language: English
• ISSN: 0920-5632; 1873-3832
• DOI: 10.1016/S0920-5632(97)00290-9

In a search for gluonic hadrons, the formation channels p̄p → K sK s, p̄p → ηη, p̄p → π 0η and p̄p → π 0π 0 were studied in the mass range from 2.1 to 2.4 GeV using the Jetset (PS202) detector and an internal molecular hydrogen cluster jet target installed in the Low Energy Antiproton Ring (LEAR) at CERN. Cross sections for p̄p → K sK s have been obtained and limits are set on the non-observation of the ξ(2230). Conversely, we find evidence for a narrow signal in a preliminary analysis of our p̄p → ηη data consistent with a narrow ξ(2230).