SM Higgs boson searches in the early ATLAS data

Abstract

ATLAS exclusion and discovery potentials of Standard Model Higgs boson searches at the LHC at 14 TeV, 10 TeV and 7 TeV center-of-mass energy are reviewed. For a LHC center-of-mass energy of 7 TeV and integrated luminosity of 1 fb${}^{-1}$, contributions from the important decay channels $\text{Hboson}\to \text{Wboson}{\text{Wboson}}^{(\ast )}\to \ell \nu \ell \nu$, $\text{Hboson}\to \text{Zboson}{\text{Zboson}}^{(\ast )}\to \ell \ell \ell \ell$ and $\text{Hboson}\to \gamma \gamma$ are considered, based on recent full Monte Carlo simulations at 14 and 10 TeV and the cross-section rescaling for the 7 TeV center-of-mass energy. First measurements of backgrounds to Standard Model Higgs boson search are also presented.

Comments: 6 pages, 2 figures, to appear in the Proceedings of IHEPLHC10 Conference (Protvino, Russia, October 2010)