Photon structure functions and azimuthal correlations of lepton pairs in tagged gamma gamma collisions

The reactions e + e − → e + e − e + e − and e + e − → e + e − μ + μ − , in a single tag configuration, are studied at LEP with the L3 detector. The data set corresponds to an integrated luminosity of 93.7 pb −1 at s =91 GeV. Differential cross sections are measured for 1.4 GeV 2 ≤Q 2 ≤7.6 GeV 2 . The leptonic photon structure function F γ 2 and azimuthal correlations are measured for e + e − → e + e − μ + μ − . The related structure functions F γ A and F γ B , which originate from interference terms of the scattering amplitudes, are determined for the first time.

electron positron: colliding beams
exchange: two-photon
photon photon: interaction
electron: pair production
muon: pair production
photon: structure function
angular correlation
scattering amplitude: interference
L3
experimental results

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Figures(0)

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