Abstract
The K s 0K s 0 final state in two-photon collisions is studied with the L3 detector at LEP using data at centre of mass energies from 91 GeV to 183 GeV. The K s 0K s 0 mass spectrum is dominated by the formation of the f 2′(1525) tensor meson whose two-photon partial width is measured. Clear evidence for destructive f 2-a 2 interference is observed. No signal is present in the region around 2.2 GeV. An upper limit for the two-photon partial width times the K s 0K s 0 branching ratio of the ξ(2230) glueball candidate is then derived. An enhancement is observed around 1750 MeV. It may be due to the formation of a radial recurrence of the f 2′(1525) or to the s s member of the 0 ++ meson nonet.
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