Study of multiphoton final states and tests of QED in $e^{+} e^{-}$ collisions at $\sqrt{S}$ up to 209-GeV - INSPIRE

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Study of multiphoton final states and tests of QED in $e^{+} e^{-}$ collisions at $\sqrt{S}$ up to 209-GeV

L3

Collaboration

•

P. Achard

Dec, 2001

15 pages

Published in:

Phys.Lett.B 531 (2002) 28-38

e-Print:

hep-ex/0202025 [hep-ex]

DOI:

10.1016/S0370-2693(02)01339-4

PDG: Limits for Excited

{{\mathit e}}

{{\mathit e}^{*}}

{{\mathit e}^{+}}

{{\mathit e}^{-}}

\rightarrow

{{\mathit \gamma}}{{\mathit \gamma}}

Report number:

CERN-EP-2001-096

Experiments:

CERN-LEP-L3

View in:

reference search34 citations

Citations per year

Abstract: (Elsevier)

The process e + e − → nγ with n ⩾2 is studied at centre-of-mass energies ranging from s =192 to 209 GeV. The data sample corresponds to a total integrated luminosity of 427 pb −1 . 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.

electron positron: colliding beams
electron positron: annihilation
photon: multiple production
quantum electrodynamics: validity test
radiative correction
channel cross section
differential cross section: angular dependence
effective Lagrangian
lepton: composite
lepton: excited state

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