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Measurement of the cross-section for the process gamma* gamma* --> hadrons at LEP.

The L3 collaboration Acciarri, M. ; Achard, P. ; Adriani, O. ; et al.

Phys.Lett.B 453 (1999) 333-342, 1999.

Inspire Record 482478 DOI 10.17182/hepdata.49195

Measurements of the two-photon interaction e + e − → e + e − + hadrons at s ≃ 91 GeV and s ≃ 183 GeV are presented. The double-tag events, collected with the L3 detector, correspond to interated luminosities of 140 pb −1 at 91 GeV and 52 pb −1 at 183 GeV. The cross-section of γ ∗ γ ∗ collisions has been measured at 〈 Q 2 〉 = 3.5 GeV 2 and 〈 Q 2 〉 = 14 GeV 2 . The data agree well with predictions based on perturbative QCD, while the Quark Parton Model alone is insufficient to describe the data.

3 data tables

Table 1

No description provided.

Table 2

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Table 3

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