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More Jets in more LHC searches

Schichtel, Peter

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Abstract

Multi jet observables are a powerful tool to new physics as well as a boost to standard analysis strategies. We show their use in a reasonably model independent dark matter search and a jet veto Higgs analysis. We find however that, these observables are plagued by huge theoretical uncertainties connected to unphysical scale parameters. In the democratic limit we compute analytically the all order resummed jet spectrum at leading log. It obeys so called staircase scaling. With the help of state of the art Monte Carlo tools we study the jet spectrum features in great detail. In addition we also study so called Poisson scaling. This allows us to develop a data driven strategy to fix the standard model multi jet backgrounds.

Item Type: Dissertation
Supervisor: Plehn, Prof. Dr. Tilman
Date of thesis defense: 15 October 2014
Date Deposited: 22 Oct 2014 07:21
Date: 2014
Faculties / Institutes: The Faculty of Physics and Astronomy > Institute for Theoretical Physics
Subjects: 530 Physics
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