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A TEST OF QUANTUM ELECTRODYNAMICS IN THE REACTION E+E- -]GAMMA-GAMMA(GAMMA)

Abstract:

We have measured the total and differential cross sections of the reaction e+e- → γγ(γ) at center-of-mass energies around 91 GeV, with an integrated luminosity of 14.2 pb-1. The results are in good agreement with QED predictions. We set lower limits, at 95% confidence level, on the QED cutoff parameters of Λ+ > 139 GeV, Λ- > 108 GeV and on the mass of an excited electron of me* > 127 GeV. We searched for Z0 rare decays with photonic signitures in the final state. Upper limits, at 95%...

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Publication status:
Published

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Journal:
Physics Letters B More from this journal
Volume:
288
Issue:
3-4
Pages:
404-411
Publication date:
1992-08-27
DOI:
ISSN:
0370-2693
Pubs id:
pubs:23025
UUID:
uuid:6ac5f54b-a209-4579-87c0-b6de76a1c4b7
Local pid:
pubs:23025
Source identifiers:
23025
Deposit date:
2012-12-19

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