Total hadronic cross-section for photon-photon interactions at LEP

The total hadronic cross-section σ γγ for the interaction of real photons, γγ → hadrons, is extracted from a measurement of the cross-section of the process e + e − → e + e −γ ∗γ ∗ → ( e + e − + hadrons) using a luminosity function for the photon flux and form factors for extrapolating to Q 2 = 0. T...

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Bibliographic Details
Published in:Nuclear physics. Section B, Proceedings supplement Proceedings supplement, 1999-03, Vol.71 (1), p.381-387
Main Author: Wäckerle, Frank
Format: Article
Language:English
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Summary:The total hadronic cross-section σ γγ for the interaction of real photons, γγ → hadrons, is extracted from a measurement of the cross-section of the process e + e − → e + e −γ ∗γ ∗ → ( e + e − + hadrons) using a luminosity function for the photon flux and form factors for extrapolating to Q 2 = 0. The data was taken with the OPAL detector at LEP at e +e − centre-of-mass energies √ s ee = 161 GeV and 172 GeV. In the energy range 10 ≤ W ≤ 110 GeV the total hadronic γγ cross-section σ γγ is consistent with the Regge behaviour of the total cross-section observed in γp and hadron-hadron interactions.
ISSN:0920-5632
1873-3832
DOI:10.1016/S0920-5632(98)00369-7