Abstract

A search for the Higgs boson has been performed in the H->WW->lvlv channel (l=e/mu) with an integrated luminosity of 2.05/fb of pp collisions at sqrt(s) = 7 TeV collected with the ATLAS detector at the Large Hadron Collider. No significant excess of events over the expected background is observed and limits on the Higgs boson production cross section are derived for a Higgs boson mass in the range 110<mH<300 GeV. The observations exclude the presence of a Standard Model Higgs boson with a mass 145<mH<206 GeV at 95% confidence level.

Highlights

  • Search for the Higgs Bosonpiffinffi the H ! WWðÃÞ ! lþlÀ Decay Channel in pp Collisions at s 1⁄4 7 TeV with the ATLAS Detector

  • ! ‘þ‘À" channel (‘ TeV collected with the 1⁄4 e=) ATLAS

  • The observations exclude the presence of a standard model Higgs boson with a mass 145 < mH < 206 GeV at 95% confidence level

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Summary

Introduction

Search for the Higgs Bosonpiffinffi the H ! WWðÃÞ ! lþlÀ Decay Channel in pp Collisions at s 1⁄4 7 TeV with the ATLAS Detector. The observations exclude the presence of a standard model Higgs boson with a mass 145 < mH < 206 GeV at 95% confidence level. Direct searches at LEP and the Tevatron exclude a standard model Higgs boson with a mass mH < 114:4 GeV or 156 GeV < mH < 177 GeV [5] at 95% confidence level (C.L.).

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