Inclusive charged hadron production in two-photon collisions at LEP

Inclusive charged hadron production, e⁺e⁻→e⁺e⁻h^±X, is studied using 414 pb⁻¹ of data collected at LEP with the L3 detector at centre-of-mass energies between 189 and 202 GeV. Single particle inclusive differential cross sections are measured as a function of the particle transverse momentum, p_t, and pseudo-rapidity, η. For p_t⩽1.5 GeV, the data are well described by an exponential, typical of soft hadronic processes. For higher p_t, the onset of perturbative QCD processes is observed. The π^± production cross section for p_t>5 GeV is much higher than the NLO QCD predictions.