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

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.
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http://hal.in2p3.fr/in2p3-01192639
Contributor : Dominique Girod <>
Submitted on : Thursday, September 3, 2015 - 11:05:25 AM
Last modification on : Thursday, March 15, 2018 - 11:40:10 AM

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  • HAL Id : in2p3-01192639, version 1
  • ARXIV : 1508.00581

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A. Falkowski, M. Gonzalez-Alonso, Admir Greljo, David Marzocca. Global Constraints on Anomalous Triple Gauge Couplings in the Effective Field Theory Approach. Physical Review Letters, American Physical Society, 2016, 116, pp.011801. ⟨in2p3-01192639⟩

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