Back to Search Start Over

Global constraints on anomalous triple gauge couplings in effective field theory approach

Authors :
Falkowski, Adam
Gonzalez-Alonso, Martin
Greljo, Admir
Marzocca, David
Source :
Phys. Rev. Lett. 116, 011801 (2016)
Publication Year :
2015

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 higher-dimensional 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. As a side product, we provide the results of the combined fit in different EFT bases.<br />Comment: 7 pages. v2: References and clarifications added

Details

Database :
arXiv
Journal :
Phys. Rev. Lett. 116, 011801 (2016)
Publication Type :
Report
Accession number :
edsarx.1508.00581
Document Type :
Working Paper
Full Text :
https://doi.org/10.1103/PhysRevLett.116.011801