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arXiv · hep-ex/9802016

Study of the reaction pbar p -> phi phi from 1.1 to 2.0 GeV/c

C. Evangelista·A. Palano·D. Drijard·N. H. Hamann·R. T. Jones·B. Mouëllic·S. Ohlsson·J. -M. Perreau·W. Eyrich·M. Moosburger·S. Pomp·F. Stinzing·H. Fischer·J. Franz·E. Rössle·H. Schmitt·H. Wirth·A. Buzzo·K. Kirsebom·M. Lo Vetere·M. Macr\`ı·M. Marinelli·S. Passaggio·M. G. Pia·A. Pozzo·E. Robutti·A. Santroni·P. T. Debevec·R. A. Eisenstein·P. G. Harris·D. W. Hertzog·S. A. Hughes·P. E. Reimer·J. Ritter·R. Geyer·K. Kilian·W. Oelert·K. Röhrich·M. Rook·O. Steinkamp·H. Korsmo·B. Stugu·T. Johansson
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Abstract

A study has been performed of the reaction pbar p -> 4K using in-flight antiprotons from 1.1 to 2.0 GeV/c incident momentum interacting with a hydrogen jet target. The reaction is dominated by the production of a pair of phi mesons. The pbar p -> phi phi cross section rises sharply above threshold and then falls continuously as a function of increasing antiproton momentum. The overall magnitude of the cross section exceeds expectations from a simple application of the OZI rule by two orders of magnitude. In a fine scan around the xi/f_J(2230) resonance, no structure is observed. A limit is set for the double branching ratio B(xi -> pbar p) * B(xi -> phi phi) < 6e-5 for a spin 2 resonance of M = 2.235 GeV and Width = 15 MeV.

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C. Evangelista, A. Palano, D. Drijard, N. H. Hamann, R. T. Jones, B. Mouëllic, S. Ohlsson, J. -M. Perreau, W. Eyrich, M. Moosburger, S. Pomp, F. Stinzing, H. Fischer, J. Franz, E. Rössle, H. Schmitt, H. Wirth, A. Buzzo, K. Kirsebom, M. Lo Vetere, M. Macr\`ı, M. Marinelli, S. Passaggio, M. G. Pia, A. Pozzo, E. Robutti, A. Santroni, P. T. Debevec, R. A. Eisenstein, P. G. Harris, D. W. Hertzog, S. A. Hughes, P. E. Reimer, J. Ritter, R. Geyer, K. Kilian, W. Oelert, K. Röhrich, M. Rook, O. Steinkamp, H. Korsmo, B. Stugu, T. Johansson. 1998-02-18. Study of the reaction pbar p -> phi phi from 1.1 to 2.0 GeV/c. https://doi.org/10.1103/physrevd.57.5370

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