Higgs searches in the H -> bb channel in ATLAS

Patricia Conde Muíño


Sala P9, IST, Edifício Matemática
Tuesday, November 8th, 2011 at 04:00 PM


The search for the Standard Model Higgs boson is one of the most important goals of the Large Hadron Collider (LHC) at CERN. Fits to the Electroweak precision measurements and direct searches perfomed up to now favor a low mass Higgs, close to the exclusion limit obtained at LEP (114.4 GeV). In this low mass region, the Higgs decays mainly to a pair of b-quarks. The dominant production mode is gluon-gluon fusion, that is affected by very large Standard Model backgrounds. However, the associated production of a Higgs and a vector boson, VH, despite its smaller cross-section, is more promising due to the clear signatures from the leptonic decays of the vector bosons. In this talk, I will present the ?rst ATLAS direct search for the Standard Model Higgs boson in the mass range 110 < mH < 130 GeV when produced in association with a W or Z boson and decaying to bb.

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