Abstract

We have studied the ππ and K K ̄ systems centrally produced in proton collisions at 300 GeV/c. Clear evidence for S*/fhook0(975) production is observed. An analysis performed on the π+π- mass spectrum in the 1.0 GeV region, using a coupled channel formalism, shows that it is possible to describe the S*/fhook0(975) effect with one single resonance, and requires interference of the S*/fhook0(975) with the S-wave background. The resulting S*/fhook0(975) parameters are m0 = 979 ± 4 MeV, gπ = 0.28 ± 0.04, gK = 0.56 ± 0.18. Evidence is found for a structure having a mass of 1472 ± 12 MeV and a width of 195 ± 33 MeV. © 1991

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