Speaker: 
Martin Wiebusch
Speaker affiliation: 
IPPP, Durham University
Date: 
Friday, January 17, 2014 - 16:15
Room: 
Building 44 (Shackleton) Lect. Theatre B (1057)
Title: 
Global Fits for Physics Beyond the SM
Abstract: 

The precise determination of the Higgs boson couplings (and their
comparison with the SM predictions) will be one of the major goals of
future collider experiments. To estimate the possible size of signals
for physics beyond the SM, such as models with an extended Higgs or
fermion sector, global analyses of all currently available date are
necessary. In this talk I report on the results of our global fits of
flavour, electroweak precision and LHC Higgs data in the context of the
SM with a fourth fermion generation and the (generic) type-II
two-Higgs-doublet-model (2HDM). I will also address subtleties in the
statistical treatment of experimental data which occur in fits of models
beyond the SM. For the 2HDM, I discuss the allowed regions of parameter
space and the possible deviations of the Higgs couplings to SM fermions
and vector bosons from their SM values. I will also comment on the
possible enhancements of triple Higgs couplings in the type-II 2HDM.