Abstract
Heavy neutral spinless particles are searched for using e + e − collision data of CM energies between 54 and 64 GeV, collected with the VENUS detector at TRISTAN. The existence of such a particle might explain the anomalous e + e − → l + l − γγ reaction recently reported by a LEP experiment. Negative results lead to constraints on the partial decay width of such particles to electrons: in narrow resonance cases, Γ ee < 1MeV from Bhabha scattering data and Γ ee ΓB γγ < 3 keV from γγ production data at the 95% CL for masses around 59 GeV/ c 2.
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