Search for eta_b in Two-Photon Events

Details Search for eta_b in Two-Photon Events Search for eta_b in Two-Photon Events

2001-10-16

arxiv.org/abs/hep-ex/0110030v1

Physics

High Energy Physics

High Energy Physics - Experiment

4 pages, Submitted to proceedings of the Conference: PHOTON 2001, Ascona

Scientific paper

A search for the pseudoscalar meson eta_b 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 Gamma_gammagamma(eta_b)*BR for both modes of 57eV and 128eV were obtained with corresponding limits of 17% and 38% on branching ratios BR(eta_b) -> 4 charged particles and BR(eta_b) -> 6 charged particles at a confidence level of 95%. The candidate has a mass of 9.30 +- 0.04GeV.

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