Abstract
Details of the production of the new particle discovered by the ATLAS experiment at the LHC in the mass region of mH = 126 GeV in the search for the Standard Model Higgs boson at √s = 7 TeV and 8 TeV are presented. The addition of a category enriched in vector boson fusion events in the H → γγ search allows to increase the sensitivity of the search of a Standard Model Higgs boson. It also allows to separate better between gluon fusion and vector boson production modes, thus giving a first insight to the couplings of this newly discovered boson.
Highlights
The ATLAS [1] and CMS [2] collaborations have independently reported observations of a new boson compatible with the SM Higgs boson, using the 2011 and 2012 datasets collected until the end of June 2012 [3, 4]
Details of the production of the new particle discovered by the ATLAS experim√ent at the LHC in the mass region of mH = 126 GeV in the search for the Standard Model Higgs boson at s = 7 TeV and 8 TeV are presented
The addition of a category enriched in vector boson fusion events in the H → γγ search allows to increase the sensitivity of the search of a Standard Model Higgs boson
Summary
The ATLAS [1] and CMS [2] collaborations have independently reported observations of a new boson compatible with the SM Higgs boson, using the 2011 and 2012 datasets collected until the end of June 2012 [3, 4]. More detailed measurements of this particle is necessary in order to check the compatibility with the Standard Model predictions, in particular the study of the several production modes. These production modes are, by decreasing order of cross-section production: gluon-gluon fusion (noted as ggF), vector boson fusion (VBF), associated production with a vector boson (V H) and associated production with a ttpair (ttH). The addition of a category enriched in VBF events allows to improve the sensitivity of the Higgs boson search as well as giving tools to give a first estimate of the couplings of this new boson to fermions and bosons
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