Jets signal for Higgs particle detection at LHC
Abstract
A method using jets is investigated for detecting the Higgs boson at LHC in the mass range about 114 2, suggested by LEP experiments. Higgs bosons are produced in association with a t t pair, and both t and t decay semileptonically to reduce the QCD background. After appropriate cuts, the signal is compared with the main background, t t + 2 jets. This estimate, using a reasonable approximation for the dominant background t tgg, suggests a 5.1σ effect. This method is seen to be complimentary to the two gamma signal. The ttZ channel, with Z decaying to l+ l-, may be used to reduce theoretical uncertainties in determining the t tH signal.
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