Hard photon production and tests of QED at LEP - INSPIRE

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Hard photon production and tests of QED at LEP

L3

Collaboration

Dec, 1999

12 pages

Published in:

Phys.Lett.B 475 (2000) 198-205

e-Print:

hep-ex/0002036 [hep-ex]

DOI:

10.1016/S0370-2693(00)00082-4

Report number:

CERN-EP-99-180

Experiments:

CERN-LEP-L3

View in:

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reference search18 citations

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Abstract: (Elsevier)

The total and differential cross sections of the process e + e − → nγ with n ≥2 are measured using data collected by the L3 experiment at centre-of-mass energies of s =183 and 189 GeV . The results are in agreement with the Standard Model expectations. Limits are set on deviations from QED, contact interaction cut-off parameters and masses of excited electrons.

electron positron: colliding beams
electron positron: annihilation
photon: multiple production
differential cross section
channel cross section
electroweak interaction: validity test
quantum electrodynamics: validity test
new interaction: search for
e*
angular distribution

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Figures(9)

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