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Abstract
▪ Abstract
New results from LEAR experiments on the search for glueballs and other
non-
states have attracted considerable attention, particularly the discovery of the
f0(1500), which is an excellent candidate for the scalar
glueball. This article gives an overview about the special features of
annihilation for meson spectroscopy, and about the use of initial and
final-state selection for quantum-number filtering. The general model
underlying the partial-wave analysis is discussed. An overview about the
Crystal Barrel, OBELIX, and Jetset experiments and their results is followed by
a comparison of results from other production mechanisms. Finally, an
interpretation of the new results is given.