We study the possibility of detecting the Higgs boson in the intermediate mass range via its two jet channel. We consider only Higgs bosons produced in association with a $t \bar{ t}$ pair. Both $t$ and $\bar{ t}$ are required to decay semileptonically to reduce the QCD background. The signal is compared with the main background, $t \bar{ t} + 2$ jets, after appropriate cuts. A sizable signal above background is seen in our simulation at the parton level. Use of the $t\bar{ t}Z$ channel with $ Z$ decaying to $l^+ l^-$ is suggested for eliminating theoretical uncertainties in determining the $t \bar{ t}H$ signal.
Categories: hep-ph