3-10 August 2016
Chicago IL USA
US/Central timezone
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Boosted H­>bb Tagger in Run II

Aug 8, 2016, 6:30 PM
2h
Riverwalk A/B

Riverwalk A/B

Poster Beyond the Standard Model Poster Session

Speaker

Merve Sahinsoy (Ruprecht-Karls-Universitaet Heidelberg (DE))

Description

Several searches for Higgs bosons decaying to b­quark pairs benefit from the increased Run II centre­of­mass energy by exploiting the large transvers­momentum (boosted) Higgs boson regime, where the two b­jets are merged into one large­radius jet. ATLAS uses a boosted H­>bb tagger algorithm to separate the Higgs signal from the background processes (QCD, W and Z bosons, top quarks). The tagger takes as input a large­R=1.0 jet calibrating the pseudorapidity, energy and mass scale. The tagger employs b­tagging, Higgs candidate mass, and substructure information. The performance of several operating points in Higgs boson signal and QCD and ttbar all­hadronic backgrounds are presented. Systematic uncertainties are evaluated so that this tagger can be used in analyses. Analyses that employ the tagger, such as the search for a resonance decaying to a vector boson and a Higgs boson (X­>VH), are also presented.

Primary author

ATLAS Collaboration (CERN)

Presentation materials