The Search for the Standard Model Higgs Boson in the WW to dilepton final state

Corrine Mills (Guest Speaker)
Event Date and Time: 
Mon, 2012-02-13 11:00 - 12:00
Hennings 318
Local Contact: 
Doug Bonn
Intended Audience: 

In December, 2011, the CMS and ATLAS experiments presented preliminary results in the search for Standard Model Higgs boson at the LHC, including the first analyses of the full 2011 dataset. Large swaths of possible masses for the Higgs particle are now experimentally disfavoured, but combined evidence from multiple final states hints at a signal at low mass (m_Higgs < 130 GeV). I will present the current status and future prospects of the searches for the Standard Model Higgs boson at the ATLAS experiment, focusing on the final state with two W bosons in which each W decays to a charged lepton and a neutrino. This WW dilepton final state has excellent sensitivity over a large range of Higgs masses and contributes significantly to the discovery potential all the way down to the lower bound set by the LEP experiments. Nature has given us a cliffhanger this winter, but with the addition of the 2012 data, we should be able to make a definite statement on the existence, or non-existence, of the Standard Model Higgs boson.

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