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Search for the Minimal Supersymmetric Standard Model Neutral Higgs Bosons (A/H) decaying to tau+tau- in pp collisions at sqrt{s}=13 TeV with the ATLAS Detector Open Access


Other title
Large Hadron Collider
Minimal supersymmetric standard Model
ATLAS Detector
Standard Model
Higgs Boson
Type of item
Degree grantor
University of Alberta
Author or creator
Jabbar, Samina
Supervisor and department
Roger Moore (Department of Physics)
Examining committee member and department
Roger Moore (Department of Physics)
Aksel Hallin (Department of Physics)
John Martin (Department of Physics, Univ. of Toronto)
James Pinfold (Department of Physics)
Claire Currie (Department of Physics)
Department of Physics

Date accepted
Graduation date
2017-06:Spring 2017
Doctor of Philosophy
Degree level
This thesis presents results of a search for the neutral Higgs bosons (A/H) of the Minimal Supersymmetric Standard Model (MSSM) performed using the data corresponding to an integrated luminosity of 3.21 fb$^{-1}$ from proton-proton collisions at the centre of mass energy $\sqrt{s}$ = 13 TeV recorded by the ATLAS detector at the LHC. Two primary MSSM neutral Higgs production modes, gluon-gluon fusion and in association with b-quarks, are considered. The analysis presented here searches for events where the neutral Higgs bosons decay to a $\tau^+\tau^-$ pair with one $\tau$ decaying to leptons ($e/\mu$) and the other $\tau$ decaying to hadrons. The data are in good agreement with the background predicted by the Standard Model and the results provide an upper limit on the production cross section times branching fraction of the scalar boson decay to $\tau^+\tau^-$ as a function of the boson mass. The results are also interpreted in the $m_h^{mod+}$ MSSM benchmark scenario to derive exclusion limits on the $m_{A/H}-\tan\beta$ plane.
This thesis is made available by the University of Alberta Libraries with permission of the copyright owner solely for the purpose of private, scholarly or scientific research. This thesis, or any portion thereof, may not otherwise be copied or reproduced without the written consent of the copyright owner, except to the extent permitted by Canadian copyright law.
Citation for previous publication
Aaboud, M., Aad, G., Abbott, B. et al. Eur. Phys. J. C (2016) 76: 585.

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