Exploring the Higgs portal with the first LHC data

by Stefania Gori (Univ. of Chicago)

Tuesday 5 Jun 2012, 14:00 → 15:00 Europe/Zurich

Cubotron 727 (EPFL, Lausanne)

In light of the LHC Higgs boson data presented at Moriond, we analyse the impact of new exotic colored and charged matter fields interacting through the Higgs portal with the Standard Model Higgs boson. This additional matter can induce New Physics (NP) effects in the LHC Higgs golden channel in the low mass range: a Higgs produced in gluon-gluon fusion and decaying to two photons. We determine the parameter space that is best fitting the current LHC Higgs data (both for a Higgs at around 125 GeV and for a heavy underproduced Higgs), and compare with complementary LHC searches that are sensitive to the direct production of the NP colored states. The effects of the additional matter in the global fit of the electroweak observables are also discussed.