Inclusive $\pi^0$ and $K^0_S$ Production in Two-Photon Collisions at LEP

The reactions $e^+e^- \to e^+e^-\pi^0$ X and $e^+e^- \to e^+e^-K^0_S$ X are studied using data collected at LEP with the L3 detector at centre-of-mass energies between 189 and 202 GeV. Inclusive differential cross sections are measured as a function of the particle transverse momentum pt and the pseudo-rapidity. For $p_t \le 1.5$ GeV, the $\pi^0$ and $K^0_s$ differential cross sections are described by an exponential, typical of soft hadronic processes. For $p_t \ge 1.5$ GeV, the cross sections show the presence of perturbative QCD processes, described by a power-law. The data are compared to Monte Carlo predictions and to NLO QCD calculations. \end{document}