Search for Standard Model Higgs boson in H->WW channel in ATLAS

All the particles of the Standard Model have been observed except for the Higgs boson. This particle, which appears as a consequence of the breaking of electroweak symmetry, is responsible for giving masses to all particles. The H→ WW(∗)→ lνlν (l = e, μ) channel is particularly sensitive in the intermediate mass range 120 < mH < 240 GeV which covers most of the range preferred by the global electroweak fits Searches use 1.7 fb−1 of p p collisions at √s = 7 TeV recorded in the spring and summer of 2011.