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Evidence forf 2 (1720) production in the reaction pomeron-pomeron→π+π−π+π− |
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| Authors: | A. Breakstone R. Campanini H. B. Crawley G. M. Dallavalle M. M. Deninno K. Doroba D. Drijard F. Fabbri A. Firestone H. G. Fischer H. Frehse W. Geist G. Giacomelli R. Gokieli M. Gorbics P. Hanke M. Heiden W. Herr L. D. Isenhower E. E. Kluge J. W. Lamsa R. A. Leacock T. Lohse R. Mankel W. T. Meyer G. Mornacchi T. Nakada M. Panter A. Putzer K. Rauschnabel B. Rensch F. Rimondi M. Schmelling G. P. Siroli J. D. Skeens R. Sosnowski M. Szczekowski O. Ullaland D. Wegener R. Yeung |
| Affiliation: | 1. Ames Laboratory and Physics Department, Iowa State Univ., Ames, USA 3. Istituto di Fisica dell'Università and INFN, Bologna, Italy 4. University and Institute for Nuclear Research, Warsaw, Poland 5. CERN, European Organization for Nuclear Research, Geneva, Switzerland 9. Institut für Hochenergiephysik, Heidelberg, Germany 12. Institut für Physik der Universit?t, Dortmund, Germany |
| Abstract: | Data are presented on pomeron-pomeron interactions which produce a central π+π?π+π? system in proton-proton collisions at √s=62 GeV at the CERN Intersecting Storage Rings. A spin-parity analysis of the π+π?π+π? system shows evidence for the production of the statef 2 (1720) with decay to ρ0π+π?. Since pomeron-pomeron interactions are expected to favor the production of gluonic bound states, observation of thef 2 (1720) supports earlier interpretations of it as a glueball. In addition, enhancements near threshold give indication of the statef 2 (1270) decaying to ρ0ρ0 and the statef 0 (1400) decaying to ρ0π+π?. |
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