Search for exotic mesons produced by baryon exchange in the reaction π+p → Λ + x++ at 12 GeV/c |
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| Authors: | H Brundiers R Hartung K Runge O Schaile C Weber F Brun G Carles M Cribier JR Hubbard G Laurens L Moscoso A Muller S Zylberajch L Fluri |
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| Institution: | Universität Freiburg, Germany;DPhPE CEN, Saclay, France;Laboratorium für Hochenergie ETH, Zürich, Switzerland |
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| Abstract: | A search for exotic mesons has been carried out at the CERN Omega spectrometer. The baryon-exchange reaction π+p → Λ + x++ was studied at 12 GeV/c incident beam momentum. No evidence was found for the existence of doubly-charged strange mesons. The upper limit (95% confidence level) for this reaction is 60 nb for exotic mesons with squared masses from 1 to 7 (GeV/c2)2 and 150 nb for 7 to 13 (GeV/c2)2. These limits are of the same order of magnitude as the exotic cross-sections expected from two-component duality arguments. |
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