Combined search for the Standard Model Higgs boson using up to 4.9 fb−1 of pp collision data at <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si1.gif" overflow="scroll"><mml:msqrt><mml:mi>s</mml:mi></mml:msqrt><mml:mo>=</mml:mo><mml:mn>7</mml:mn><mml:mtext> </mml:mtext><mml:mtext>TeV</mml:mtext></mml:math> with the ATLAS detector at the LHC

A combined search for the Standard Model Higgs boson with the ATLAS experiment at the LHC using datasets corresponding to integrated luminosities from 1.04 fb -1 to 4.9 fb -1 of pp collisions collected at s = 7 TeV is presented. The Higgs boson mass ranges 112.9-115.5 GeV, 131-238 GeV and 251-466 GeV are excluded at the 95% confidence level (CL), while the range 124-519 GeV is expected to be excluded in the absence of a signal. An excess of events is observed around m H 126 GeV with a local significance of 3.5 standard deviations ( ). The local significances of H , H Z Z ( * ) + -+ - and H W W ( * ) + -, the three most sensitive channels in this mass range, are 2.8 , 2.1 and 1.4 , respectively. The global probability for the background to produce such a fluctuation anywhere in the explored Higgs boson mass range 110-600 GeV is estimated to be 1.4% or, equivalently, 2.2 .