PDF《CERN-PH-EP-2012-019》

200 GeV to

600 GeV range of mH. The analysis described in Ref. [13] is based on data corre- sponding to an integrated luminosity of 1.04 fb?1 . It has been updated using a dataset corresponding to an integrated luminosity of 2.05 fb?1 . The main change in the event selection is the use of an improved b-tagging algorithm [15] to veto events with jets likely to have originated from b-quarks. The analysis is tuned for two search regions with mH hypotheses above and below

2 [GeV] qq ν l m

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4 10 Data =400 GeV, 50xSM H m Total background -1 Ldt = 1.04 fb ∫ ATLAS qq ν l → WW → H 0+1 jet [GeV] qq ν l m

0 400

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25 GeV

1 10

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