Global Constraints on Anomalous Triple Gauge Couplings in the Effective Field Theory Approach

We present a combined analysis of LHC Higgs data (signal strengths) together with LEP-2 WW production measurements. To characterize possible deviations from the standard model (SM) predictions, we employ the framework of an effective field theory (EFT) where the SM is extended by higher-dimensional...

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Veröffentlicht in:Physical review letters 2016-01, Vol.116 (1), p.011801-011801, Article 011801
Hauptverfasser: Falkowski, Adam, González-Alonso, Martín, Greljo, Admir, Marzocca, David
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Sprache:eng
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Zusammenfassung:We present a combined analysis of LHC Higgs data (signal strengths) together with LEP-2 WW production measurements. To characterize possible deviations from the standard model (SM) predictions, we employ the framework of an effective field theory (EFT) where the SM is extended by higher-dimensional operators suppressed by the mass scale of new physics Λ. The analysis is performed consistently at the order Λ(-2) in the EFT expansion keeping all the relevant operators. While the two data sets suffer from flat directions, together they impose stringent model-independent constraints on the anomalous triple gauge couplings.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.116.011801