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Books > Science & Mathematics > Physics > Quantum physics (quantum mechanics)
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Search for New Physics in tt Final States with Additional Heavy-Flavor Jets with the ATLAS Detector (Paperback, Softcover reprint of the original 1st ed. 2016)
Loot Price: R3,683
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Search for New Physics in tt Final States with Additional Heavy-Flavor Jets with the ATLAS Detector (Paperback, Softcover reprint of the original 1st ed. 2016)
Series: Springer Theses
Expected to ship within 10 - 15 working days
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This doctoral thesis focuses on the search for new phenomena in
top-antitop quark (tt) final states with additional b-quark jets at
the LHC. It uses the full Run 1 dataset collected by the ATLAS
experiment in proton-proton collisions at s=8 TeV. The final state
of interest consists of an isolated lepton, a neutrino and at least
six jets with at least four b-tagged jets, a challenging
experimental signature owing to the large background from
tt+heavy-flavor production. This final state is characteristic of
ttH production, with the Higgs boson decaying into bb, a process
that allows direct probing of the top-Higgs Yukawa coupling. This
signature is also present in many extensions of the Standard Model
that have been proposed as solutions to the hierarchy problem, such
as supersymmetry or composite Higgs models, which predict the pair
production of bosonic or fermionic top quark partners, or the
anomalous production of four-top-quark events. All these physics
processes have been searched for using an ambitious search strategy
that has been developed on the basis of a combination of
state-of-art theoretical predictions and a sophisticated
statistical analysis to constrain in-situ the large background
uncertainties. As a result, the most restrictive bounds to date on
the above physics processes have been obtained.
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