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arXiv · hep-ex/0102025

Total Cross Section in gamma gamma Collisions at LEP

L3 Collaboration
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Abstract

The reaction e+e- -> e+e- gamma* gamma* -> e+e- hadrons for quasi-real photons is studied using data from root(s) = 183 GeV up to 202 GeV. Results on the total cross sections sigma(e+e- -> e+e- hadrons) and sigma(+e- gamma* gamma* -> e+e- hadrons) are given for the two-photon centre-of-mass energies 5 GeV < Wgammagamma < 185 GeV. The total cross section of two real photons is described by a Regge parametrisation. We observe a steeper rise with the two-photon centre-of-mass energy as compared to the hadron-hadron and the photon-proton cross sections. The data are also compared to the expectations of different theoretical models.

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L3 Collaboration. 2001-02-10. Total Cross Section in gamma gamma Collisions at LEP. https://doi.org/10.1016/s0370-2693(01)01072-3

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