  Models with extra gauge symmetry were well motivated extensions of the
Standard Model. In this paper, we search for an excess of events in search of a
heavy neutral gauge boson Z which is fermiophobic. We are looking at llbb final
states where the dilepton channel provides the most stringent constraint on the
fermiophobic (FB) model. Since Z is fermiophobic, the production of such
particles can occur via vector boson fusion, with subsequent decays into WW or
Zh. We observe no significant excess of events over the background-only
hypothesis and are able to put the constraint on efficiency times
cross-section.
