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

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

2002-02-11

arxiv.org/abs/hep-ex/0202025v1

Phys.Lett.B531:28-38,2002

Physics

High Energy Physics

High Energy Physics - Experiment

Scientific paper

10.1016/S0370-2693(02)01339-4

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.

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