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Search for Light Dijet Resonances using Trigger Jets with the ATLAS Experiment at the Large Hadron Collider

Meyer zu Theenhausen, Hanno

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Searches for resonances in the dijet invariant mass spectrum provide a model-independent approach to search for physics beyond the Standard Model at the Large Hadron Collider. In the sub-TeV mass range the sensitivity of dijet searches is statistically limited due to the bandwidth capacity of the data acquisition system. This limitation can be circumvented by only recording the calorimeter jets that are reconstructed within the trigger system, omitting full detector readout. This approach is applied to the analysis of proton-proton collision data recorded with the ATLAS detector at a center of mass energy of 13 TeV with an integrated luminosity of 29.7 fb^-1. The jets are subjected to a dedicated calibration procedure using calorimeter information only. The search targets dijet resonances in the mass range between 400 and 2000 GeV. Using a data-driven background estimate, no significant excesses are found.

Item Type: Dissertation
Supervisor: Schultz-Coulon, Prof. Dr. Hans-Christian
Date of thesis defense: 8 February 2018
Date Deposited: 20 Feb 2018 09:49
Date: 2018
Faculties / Institutes: The Faculty of Physics and Astronomy > Kirchhoff Institute for Physics
Subjects: 530 Physics
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