Orateur
Dr
Fabrice Couderc
(CEA/DAPNIA/SPP)
Description
We present searches for Higgs bosons in final states with $b$-quarks and/or taus
at a center-of-mass energy of $\sqrt{s}=$1.96~TeV using up to 8.5~fb$^{-1}$ of data
collected with the D0 detector. In Supersymmetric models the Higgs boson production
cross section can be significantly enhanced compared to the Standard Model, and in
such models the Higgs boson has a significant branching fractions to $\tau$ leptons
at all masses and the gluon fusion production process can be exploited directly. In
addition, the cross-section for production of neutral Higgs bosons in association with
bottom quarks is greatly enhanced compared to the Standard Model. Therefore we
also search for an excess of events above the multijet background in events with
3 and 4 $b$-jets exploiting the dominant decay channel of the Higgs boson to $b$
quarks, and also exploit the hybrid channel with $b$-quarks and $tau$ leptons. We
combine the result of these 3 searche channels in the context of different scenarios
within the Minimal Supersymmetric Standard Model.
Auteur principal
Dr
Chiara Mariotti
(INFN Torino)
