Speaker
Jeonghyeon Song
(Konkuk University)
Description
The SU(3) simplest little Higgs model, with the mu term introduced by hand,
accommodates light pseudo-scalar boson, eta. The eta mass can be at 10-100 GeV scale.
For lighter eta, the sizable coupling of H-eta-eta leads to dominant decay of the Higgs boson
into a pair of eta's especially when mH below the WW threshold. Another new decay channel
of H->Z eta can be dominant or compatible with H-> WW for mH above the Z+eta threshold.
We show that the LEP bound on the Higgs boson mass is loosened to some extent
due to this new H->eta+eta decay channel as well as the reduced coupling of H-Z-Z.
The Higgs boson mass bound falls to about 110 GeV for f=3-4 TeV. We also investigate
the discovery potential of such scenarios at the LHC, using the production channels Wh and Zh
followed by W-> l+nu and Z-> l+l, and h-> eta eta ->4b. We show that a significant Higgs signal
can be found at the LHC for mH<160 GeV.
Author
Jeonghyeon Song
(Konkuk University)