Search for etab in Two-Photon Events
Abstract
A search for the pseudoscalar meson etab was performed at LEP~II energies with an integrated luminosity of 700pb-1. The search, done for the decay modes into 4 and 6 charged particles yielded 0 and 1 candidates, respectively. Upper limits on Gammagammagamma(etab)*BR for both modes of 57eV and 128eV were obtained with corresponding limits of 17% and 38% on branching ratios BR(etab) -> 4 charged particles and BR(etab) -> 6 charged particles at a confidence level of 95%. The candidate has a mass of 9.30 +- 0.04GeV.
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