Speaker
Dr
David Lopez-Val
(CP3, Universite catholique de Louvain)
Description
Effective field theory (EFT) provides an efficient
framework to study the phenomenology of extended Higgs sectors
at the LHC. One caveat is that assuming a clear hierarchy of scales strongly suppresses the size of new physics deviations in an environment where partonic processes can probe a wide range of scales. We consider several modifications of the Higgs sector: a
singlet and doublet extension, scalar top partners, and a vector triplet. We systematically compare full model versus EFT--based
predictions relevant for the LHC Run II Higgs program.
We discuss which observables are accurately described by the EFT in the linear representation and identify those situations in which the EFT approach breaks down.
Primary author
Dr
David Lopez-Val
(CP3, Universite catholique de Louvain)
Co-authors
Prof.
Ayres Freitas
(University of Pittsburgh)
Mr
Johann Brehmer
(ITP, Heidelberg University)
Prof.
Tilman Plehn
(ITP, Heidelberg University)
