Higgs Couplings in an Effective Theory Framework

Abstract

The study of the properties of the scalar boson recently discovered at the LHC (ATLAS and CMS experiments) may allow us to know whether it is well described by the Standard Model. In the case where deviations from SM predictions are present, this would be an evidence for the presence of new physics. We focus on the study of the Higgs couplings to matter in a model-independent approach by introducing a dimension-6 effective Lagrangian that includes both CP-even and CP-odd effective couplings. Constraints are set on some of these coefficients using experimental data from ATLAS and CMS as well as electroweak precision measurements from LEP, SLC and Tevatron. These data meaningfully constrain CP-even and some CP-odd couplings.

4 pages, 3 figures. Proceedings of the 2014 Journées des Jeunes Chercheurs (JJC 2014), 7-13 December 2014, Le Lazaret, Sète, France (http://jjc2014.sciencesconf.org/). Based on arXiv:1404.5343 by the same author

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Cited by in corpus (4)

• Top polarisation as a probe of CP-mixing top-Higgs coupling in $tjh$ signals
• Test of the triple Higgs boson form factor in ${\mu }^{-}{\mu }^{+}\to HH$
• Tests of Higgs boson compositeness through the HHH form factor
• The Higgs boson structure functions as signposts of new physics