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Study of charged Higgs bosons using multi-jet final states with the ATLAS experiment at the LHC
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
2014 (English)Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
Abstract [en]

The ATLAS experiment at the LHC is searching for evidence of charged Higgs bosons, without yet finding it. This report investigates the possibility of reconstructing charged Higgs bosons using multi-jet final states (pp -> [b]tH+ -> [b]bbbql\nu) with focus on fully hadronic H^+ -> hW decays using a simulation of 500k events with m_{H+} = 250 GeV. After optimizing TMVA (Toolkit for Multivariate Analysis) input variables for BDT (Boosted Decision Trees), the mass of H+ was recreated with an efficiency of up to 26,7% (correct combinations).

Place, publisher, year, edition, pages
2014. , 24 p.
Keyword [en]
Charged Higgs boson, Higgs boson, charged higgs, higgs, LHC, ATLAS, particle physics, event reconstruction
National Category
Subatomic Physics
URN: urn:nbn:se:uu:diva-227536OAI: diva2:730206
Educational program
Bachelor Programme in Physics
Available from: 2014-06-27 Created: 2014-06-27 Last updated: 2014-06-27Bibliographically approved

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HpWh_J_Hallberg(769 kB)72 downloads
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Hallberg, Jesper
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