par Abreu, Pedro;Lefebure, Véronique 
;Lemonne, Jacques ;Tomaradze, A.;Van Lysebetten, Ann;Verbeure, F;Wickens, John H. ;Bertrand, Daniel ;Chen, Max;Deghorain, A.;De Brabandere, S.;De Clercq, Catherine;Herquet, P. ;Hoorelbeke, S.;Huet, Kathy; [et al.]
Référence Physics letters. Section B, 433, 3-4, page (429-440)
Publication Publié, 1998-08
;Lemonne, Jacques ;Tomaradze, A.;Van Lysebetten, Ann;Verbeure, F;Wickens, John H. ;Bertrand, Daniel ;Chen, Max;Deghorain, A.;De Brabandere, S.;De Clercq, Catherine;Herquet, P. ;Hoorelbeke, S.;Huet, Kathy; [et al.]Référence Physics letters. Section B, 433, 3-4, page (429-440)
Publication Publié, 1998-08
Article révisé par les pairs
| Résumé : | The total and the differential cross-sections for the reaction e+e- → γγ(γ) have been measured with the DELPHI detector at LEP at centre-of-mass energies from 130 to 183 GeV for an integrated luminosity of 78.19 pb-1. The results agree with the QED predictions. The lower limits (obtained including previously published results at the Z0 energies) on the QED cutoff parameters are Λ+ > 253 GeV and Λ-> 225 GeV and the lower bound on the mass of an excited electron with an effective coupling constant λγ = 1 is 231 GeV/c2. All the limits are at the 95% confidence level. © 1998 Published by Elsevier Science B.V. All rights reserved. |
