Photon 2001
DOI: 10.1142/9789812777157_0046
Elsevier, Physics Letters B, 1-2(536), p. 24-33, 2002
DOI: 10.1016/s0370-2693(02)01781-1
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Strange baryon pair production in two-photon collisions is studied with the L3 detector at LEP. The analysis is based on data collected at e+e- centre-of-mass energies from 91 GeV to 208 GeV, corresponding to an integrated luminosity of 844 pb-1. The processes gamma gamma -> Lambda Anti-lambda and gamma gamma -> Sigma0 Anti-sigma0 are identified. Their cross sections as a function of the gamma gamma centre-of-mass energy are measured and results are compared to predictions of the quark-diquark model.