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Article
Report number hep-ex/0002037 ; CERN-EP-2000-006 ; CERN-EP-2000-006 ; CERN-L3-199
Title Measurement of the e+eZγγ Cross Section and Determination of Quartic Gauge Boson Couplings at LEP
Author(s) L3 Collaboration  顯示全部 414 名作者
Affiliation (CERN)
Publication 2000
Imprint 11 Jan 2000
Number of pages 14
In: Phys. Lett. B 478 (2000) 39-49
DOI 10.1016/S0370-2693(00)00279-3
Subject category Particle Physics - Experiment
Accelerator/Facility, Experiment CERN LEP ; L3
Abstract A first measurement of the cross section of the processe+eZγγ is reported using a total integrated luminosity of 231\,pb1collected with the L3 detector at centre-of-mass energiesof 182.7\,GeV and 188.7\,GeV. By selectinghadronic events with two isolated photonsthe e+eZγγcross section is measured to be0.490.17+0.20±0.04pb at 182.7\,GeV and 0.47±0.10±0.04pb at 188.7\,GeV. Themeasurements are consistent with Standard Model expectations.Limits on Quartic Gauge Boson Couplings a0/Λ2 and ac/Λ2 of-0.009\, GeV2 <a0/Λ2< 0.008\,GeV2 and-0.007\,GeV2 <ac/Λ2< 0.013\,GeV2 are derived at95\(onfidence level.
Copyright/License Preprint: (License: CC-BY-4.0)
Copyright @ unknown. Published by Elsevier B.V.



Corresponding record in: Inspire
Email contact: caroline.laignel@cern.ch


 記錄創建於2000-01-28,最後更新在2022-01-28


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