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arXiv · hep-ex/9707041

Measurement of the pbar p -> Ks Ks Reaction from 0.6 to 1.9 GeV/c

C. Evangelista·A. Palano·D. Drijard·N. H. Hamann·R. T. Jones·B. Mouellic·S. Ohlsson·J. -M. Perreau·W. Eyrich·M. Moosburger·S. Pomp·F. Stinzing·H. Fischer·J. Franz·E. Rossle·H. Schmitt·H. Wirth·A. Buzzo·K. Kirsebom·M. Lo Vetere·M. Macri·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. Rohrich·M. Rook·O. Steinkamp·H. Korsmo·B. Stugu·T. Johansson
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Abstract

The pbar p -> Ks Ks -> 4pi+/- cross section was measured at incident antiproton momenta between 0.6 and 1.9 GeV/c using the CERN Low Energy Antiproton Ring (LEAR). This investigation was part of a systematic study of in-flight antiproton-proton annihilations into two-neutral-meson final states in a search for hadronic resonances. A coarse scan of the pbar p -> Ks Ks cross section as a function of center-of-mass energy between 1.964 and 2.395 GeV/c^2 and a fine scan of the region surrounding the Xi(2220) are presented. Upper limits on the product branching ratio BR(Xi -> pbar p)BR(Xi -> Ks Ks) are determined for a wide range of mass and width assumptions based on the non-observation of the Xi(2220). A rise in the pbar p -> Ks Ks cross section is observed near 2.15 GeV/c^2, which is consistent with the f2(2150) resonance.

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C. Evangelista, A. Palano, D. Drijard, N. H. Hamann, R. T. Jones, B. Mouellic, S. Ohlsson, J. -M. Perreau, W. Eyrich, M. Moosburger, S. Pomp, F. Stinzing, H. Fischer, J. Franz, E. Rossle, H. Schmitt, H. Wirth, A. Buzzo, K. Kirsebom, M. Lo Vetere, M. Macri, 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. Rohrich, M. Rook, O. Steinkamp, H. Korsmo, B. Stugu, T. Johansson. 1997-07-28. Measurement of the pbar p -> Ks Ks Reaction from 0.6 to 1.9 GeV/c. https://doi.org/10.1103/physrevd.56.3803

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