Search for Higgs Boson Production in Association with a W Boson in 1.96-TeV Proton-Antiproton Collisions; Doctoral thesis

摘要

We have searched for the Standard Model Higgs boson production in association with a W(sup (+-)) boson. This search is based on the data collected between February 2002 and May 2007, corresponding to an integrated luminosity of 1.9 fb(sup -1) collected by the Collider Detector at Fermilab (CDF) at the Tevatron which is a p(bar p) collider at a center of mass energy 1.96 TeV. W+Higgs channel is one of the most promising channels for the Higgs search at Tevatron in the low Higgs mass region (m(sub H) < 135 GeV/c(sup 2)), where Higgs boson decays into b(bar b) dominantly. The detection of lepton from the W boson decay makes the W+Higgs events much cleaner than the direct Higgs production events which have the largest production cross section. Experimentally we select events with a high p(sub T) lepton, high missing transverse energy and two b-quark jets. This signature is same as for the W+jets background which has a huge cross section. To reduce the W+jets background, b-jet identification algorithms are applied to at least one jet.