Evidence of W gamma gamma Production in pp collisions at root s=8 TeV and limits on anomalous quartic gauge couplings with the ATLAS detector
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CitationAad, G, Abbott, B., Abdallah, J., Abdel Khalek, S., Abdinov, O., Aben, R. ... ATLAS Collaboration. (2015). Evidence of W gamma gamma Production in pp collisions at root s=8 TeV and limits on anomalous quartic gauge couplings with the ATLAS detector. Physical Review Letters, 115(3), 1-18. https://dx.doi.org/10.1103/PhysRevLett.115.031802
This Letter reports evidence of triple gauge boson production pp -> W(l nu)gamma gamma + X, which is accessible for the first time with the 8 TeV LHC data set. The fiducial cross section for this process is measured in a data sample corresponding to an integrated luminosity of 20.3 fb(-1), collected by the ATLAS detector in 2012. Events are selected using the W boson decay to e nu or mu nu as well as requiring two isolated photons. The measured cross section is used to set limits on anomalous quartic gauge couplings in the high diphoton mass region.