CERN Accelerating science

Article
Title Search for exotic mesons produced by baryon exchange in the reaction pi /sup +/p to Lambda +x/sup ++/ at 12 GeV/c
Author(s) Brundiers, H ; Brun, F ; Carles, G ; Cribier, Michel ; Fluri, L ; Hartung, R ; Hubbard, John R ; Laurens, G ; Moscoso, L ; Müller, A ; Runge, K ; Schaile, O ; Weber, C ; Zylberajch, S
Affiliation (Univ Freiburg, Freiburg, West Germany)
Publication 1976
In: Phys. Lett. B 64 (1976) 107-10
DOI 10.1016/0370-2693(76)90368-3
Subject category Particle Physics - Phenomenology
Abstract A search for exotic mesons has been carried out at the CERN Omega spectrometer. The baryon-exchange reaction pi /sup +/p to Lambda +x /sup ++/ 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/c/sup 2/)/sup 2/ and 150 nb for 7 to 13 (GeV/c/sup 2/)/sup 2/. These limits are of the same order of magnitude as the exotic cross-sections expected from two-component duality arguments. (10 refs).

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