Abstract

We search for the Higgs Boson in 1 fb^-1 from the process ZH→ l⁺l^- bb in both ee and mm channels. These channels have a small background of mostly real Z + jets events due to the requirement of two leptons and a Z mass constraint. We loosen the tight and loose electron and muon cuts from standard high P_T (top) analyses to improve statistics. We correct the two candidate Higgs jets with an Artificial Neural Network which assigns missing transverse energy (MET) to the jets according to their MET projections and relative f. To maintain signal efficiency and improve signal discrimination, we employ an additional neural network trained to discriminate event kinematics of ZH compared to the main Z + jets background and the kinematically different tt background. This analysis improves over our previous analysis on the same 1 fb^-1 dataset by a factor of 2 improvement in luminosity.

Public note for Winter '07 conferences.

General remarks

The results should be considered preliminary until published in a refereed journal. They can be used in conference presentations with proper reference to the CDF Collaboration.

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