29 September 2015 to 2 October 2015
DESY Hamburg
Europe/Berlin timezone

Effective field theory over the edge: implications for Higgs physics

1 Oct 2015, 14:30
Seminar room 4a (DESY Hamburg)

Seminar room 4a

DESY Hamburg


Dr David Lopez-Val (CP3, Universite catholique de Louvain)


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)


Prof. Ayres Freitas (University of Pittsburgh) Mr Johann Brehmer (ITP, Heidelberg University) Prof. Tilman Plehn (ITP, Heidelberg University)

Presentation Materials