2000
DOI: 10.1016/s0370-2693(00)00082-4
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Hard-photon production and tests of QED at LEP

Abstract: 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.

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Cited by 9 publications
(1 citation statement)
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“…= 1/6 because now the final state contains just three identical bosons etc. Eventually our result of e + e − annihilation into three real photons is consistent with both theoretical prediction [15] and experimental result [23]. Finally, with a further reduction when we only calculate e + e − annihilation into two real photons, the analytic formula returns to the familiar (1 + cos 2 θ)/ sin 2 θ form.…”
Section: Numerical Resultssupporting
confidence: 86%
“…= 1/6 because now the final state contains just three identical bosons etc. Eventually our result of e + e − annihilation into three real photons is consistent with both theoretical prediction [15] and experimental result [23]. Finally, with a further reduction when we only calculate e + e − annihilation into two real photons, the analytic formula returns to the familiar (1 + cos 2 θ)/ sin 2 θ form.…”
Section: Numerical Resultssupporting
confidence: 86%