G. Alexander et al., SEARCH FOR A NARROW RESONANCE IN Z(0) DECAYS INTO HADRONS AND ISOLATED PHOTONS, Zeitschrift fur Physik. C, Particles and fields, 71(1), 1996, pp. 1-10
A search for the hadronic decay of a hypothetical resonance S-0 in the
process e(+)e(-) --> gamma + hadrons at Z(0) energies is reported. Pa
rticular care is taken to optimise the sensitivity to a scalar resonan
ce decaying into bottom quarks, as expected for Higgs production, e(+)
e(-) --> Z(0) --> H-0 gamma with H-0 --> b (b) over bar, in the Standa
rd Model or some of its extensions. No evidence for such a resonance i
s observed in a sample of about 5 million produced Z(0)'s. The results
are interpreted in terms of models of non-standard Higgs production.
An update of a search for a resonance produced in association with had
rons and the subsequent resonance decay into two photons is also prese
nted.