Study of Multiphoton Final States and Tests of QED in e+e- collisions at \root(s) up to 209 GeV

Abstract

The process e+ e- -> n gamma with n>=2 is studied at centre-of-mass energies ranging from \root(s)=192 to 208 GeV. The data sample corresponds to a total integrated luminosity of 427 1/pb. The total and differential cross sections are found to be in agreement with the QED expectations. Using all the data collected with the L3 detector above the Z pole, limits on deviations from QED, excited electrons, contact interactions, extra space dimensions and excited spin-3/2 leptons are set.

References in corpus (1)

• Determination of the e+e- -> gamma gamma (gamma) cross-section at centre-of-mass energies ranging from 189 GeV to 202 GeV

Cited by in corpus (8)

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• Single production of excited electrons at future e^-e^+, ep and pp colliders
• Search for excited electrons through $\gamma \gamma$ scattering
• Determination of the e+e- -> gamma gamma (gamma) cross-section at LEP 2
• Phenomenology of a Born-Infeld extension of the $U(1{)}_{\mathrm{Y}}$ sector at lepton colliders
• Compton Scattering of Quasi-Real Virtual Photons at LEP