Abstract.
The interaction of virtual photons is investigated using the reaction \({\rm e^+e^-} \rightarrow{\rm e^+e^-}\) hadrons based on data taken by the OPAL experiment at \({\rm e^+e^-}\) centre-of-mass energies \(\sqrt{s_{\rm ee}}=189-209\) GeV, for \(W>5\) GeV and at an average \(Q^{2}\) of 17.9 GeV\(^2\). The measured cross-sections are compared to predictions of the Quark Parton Model (QPM), to the Leading Order QCD Monte Carlo model PHOJET, to the NLO prediction for the reaction \({\rm e^+e^-}\rightarrow{\rm e^+e^-} q\bar{q}\), and to BFKL calculations. PHOJET, NLO \({\rm e^+e^-}\rightarrow{\rm e^+e^-} q\bar{q}\), and QPM describe the data reasonably well, whereas the cross-section predicted by a Leading Order BFKL calculation is too large.
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Received: 3 September 2001 / Published online: 5 April 2002
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The OPAL Collaboration., Abbiendi et al., G. Measurement of the hadronic cross-section for the scattering of two virtual photons at LEP. Eur. Phys. J. C 24, 17–31 (2002). https://doi.org/10.1007/s100520200940
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DOI: https://doi.org/10.1007/s100520200940