Speaker
Mr
Johann Brehmer
(University of Heidelberg)
Description
An effective theory of the Higgs sector allows us to analyze kinematic distributions in addition to inclusive rates. But the precision of Higgs measurements at the LHC cannot guarantee a clear hierarchy of scales, casting doubt on the validity of the effective model. We analyze how well dimension-6 operators describe LHC observables in comparison to the full theory. As benchmarks we consider a singlet extension of the Higgs sector, a two-Higgs-doublet model, new top partners, and a vector triplet, focussing on parameter ranges where the LHC will be sensitive. We discuss which Higgs observables are correctly described by the dimension-6 approximation, where it breaks down, and whether this presents a problem for LHC analyses.
Authors
Prof.
Ayres Freitas
(University of Pittsburgh)
Dr
David Lopez-Val
(Universite Catholique de Louvain)
Mr
Johann Brehmer
(University of Heidelberg)
Prof.
Tilman Plehn
(University of Heidelberg)
