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Inclusive charged hadron production in two-photon collisions at LEP

  • P. Achard
  • , O. Adriani
  • , M. Aguilar-Benitez
  • , J. Alcaraz
  • , G. Alemanni
  • , J. Allaby
  • , A. Aloisio
  • , M. G. Alviggi
  • , H. Anderhub
  • , V. P. Andreev
  • , F. Anselmo
  • , A. Arefiev
  • , T. Azemoon
  • , T. Aziz
  • , P. Bagnaia
  • , A. Bajo
  • , G. Baksay
  • , L. Baksay
  • , S. V. Baldew
  • , S. Banerjee
  • Sw Banerjee, A. Barczyk, R. Barillère, P. Bartalini, M. Basile, N. Batalova, R. Battiston, A. Bay, F. Becattini, U. Becker, F. Behner, L. Bellucci, R. Berbeco, J. Berdugo, P. Berges, B. Bertucci, B. L. Betev, M. Biasini, M. Biglietti, A. Biland, J. J. Blaising, S. C. Blyth, G. J. Bobbink, A. Böhm, L. Boldizsar, B. Borgia, S. Bottai, D. Bourilkov, M. Bourquin, J. Mans, L3 Collaboration

Research output: Contribution to journalArticlepeer-review

Abstract

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, pt , and pseudo-rapidity, η. For pt≤ 1.5 GeV, the data are well described by an exponential, typical of soft hadronic processes. For higher pt , the onset of perturbative QCD processes is observed. The π ±production cross section for pt > 5 GeV is much higher than the NLO QCD predictions.

Original languageEnglish (US)
Pages (from-to)105-114
Number of pages10
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume554
Issue number3-4
DOIs
StatePublished - Feb 20 2003

Bibliographical note

Publisher Copyright:
©2003 Elsevier Science B.V.

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