# Inclusive Charged Hadron Production in Two-Photon Collisions at LEP

3 CMS
IP2I Lyon - Institut de Physique des 2 Infinis de Lyon
Abstract : Inclusive charged hadron production, $m{e}^{+} m{e}^{-} ightarrow m{e}^{+} m{e}^{-}$ h$^{pm}$ 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, $eta$. For $p_t le 1.5$ 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 $pi^{pm}$ production cross section for $p_t 5$ GeV is much higher than the NLO QCD predictions.
Document type :
Journal articles

http://hal.in2p3.fr/in2p3-00012373
Contributor : Sylvie Flores <>
Submitted on : Monday, February 3, 2003 - 9:11:42 AM
Last modification on : Friday, December 4, 2020 - 1:22:16 PM

### Citation

P. Achard, O. Adriani, M. Aguilar-Benitez, J. Alcaraz, G. Alemanni, et al.. Inclusive Charged Hadron Production in Two-Photon Collisions at LEP. Physics Letters B, Elsevier, 2003, 554, pp.105-114. ⟨in2p3-00012373⟩

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