Jul 26 – 30, 2010
Montpellier 2 University
Europe/Paris timezone

Higgs decays to dark sector

Jul 30, 2010, 2:40 PM
20m
Amphithéatre Dumontet (Montpellier 2 University)

Amphithéatre Dumontet

Montpellier 2 University

Place Eugene Bataillon, 34095 Montpellier Cedex 5 FRANCE
Talk Dark Matter Searches at the LHC Parallel session : DM at colliders and neutrinos

Speaker

Jure Zupan (SISSA)

Description

We will discuss different constraints on higgs decays into dark sector and show that for light dark sector leading to cascade decays of higgs the mass of the higgs is actually substantially lower than SM limits at LEP. Through kinetic mixing the light dark sector at the last stage decays back to visible sector, producing an interesting novel signature of higgs decaying to lepton jets. After identifying the relevant collider observables that characterize this scenario, and study a wide range of LEP and Tevatron searches to recover the viable regions in the space of observables, we find that the Higgs decaying to lepton jets can be hidden when the event topology mimics that of hadronic backgrounds. Thus, as many as 10^4 leptonic Higgs and SUSY decays may be hiding in the LEP and Tevatron data. We present benchmark models with a 100 GeV Higgs that are consistent with all available collider constraints and dicsuss strategies for dedicated searches at LEP, the Tevatron and the LHC.

Primary author

Jure Zupan (SISSA)

Presentation materials