par Adam, Wolfgang;Hoorelbeke, S.;Huet, Kathy;Lefebure, Véronique ;Lemonne, Jacques ;Tomaradze, A.;Van Doninck, Walter;Verbeure, F;Wickens, John H. ;Bertrand, Daniel ;Bricman, Charles ;Cao, Futian;Chen, Max;Deghorain, A.;De Brabandere, S.;De Clercq, Catherine;Herquet, P. ; [et al.]
Référence Physics letters. Section B, 380, 3-4, page (471-479)
Publication Publié, 1996-07
Référence Physics letters. Section B, 380, 3-4, page (471-479)
Publication Publié, 1996-07
Article révisé par les pairs
Résumé : | This letter reports the results of the measurement of single photon production in the reaction e+e- → γ+ invisible particles at centre-of-mass energies √s = 130 and 136 GeV and an integrated luminosity of 5.83 pb-1, collected with the DELPHI detector at LEP. The signal is compatible with the prediction of the Standard Model for the process e+e- → vv̄γ, and the number of neutrino families has been determined to be Nv, = 3.1 ± 0.6. Limits have been derived on anomalous neutral gauge boson couplings and on compositeness in the framework of a specific model. |