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 higherdimensional operators suppressed by the mass scale of new physics Lambda. The analysis is performed consistently at the order Lambda(-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.
Global Constraints on Anomalous Triple Gauge Couplings in the Effective Field Theory Approach / Falkowski, Adam; González-Alonso, Martín; Greljo, Admir; Marzocca, David. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 116:1(2016), pp. 1-5. [10.1103/PhysRevLett.116.011801]
Global Constraints on Anomalous Triple Gauge Couplings in the Effective Field Theory Approach
Falkowski, Adam;Greljo, Admir;Marzocca, David
2016-01-01
Abstract
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 higherdimensional operators suppressed by the mass scale of new physics Lambda. The analysis is performed consistently at the order Lambda(-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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
