Phenomenology for the Large Hadron Collider

Nordström, Karl Anders Mattias (2017) Phenomenology for the Large Hadron Collider. PhD thesis, University of Glasgow.

Abstract

The search for physics Beyond the Standard Model is the underlying motivation for
the physics programme of the Large Hadron Collider at CERN. In this thesis we
will present studies into the Large Hadron Collider phenomenology of dark matter
inspired extensions to the Standard Model, di-Higgs + 2 jet (hhjj) production, CP
violating effects in the Higgs sector, and the use of shape information from top
polarisation measurements in searches for new physics.
Full scans of the parameter space of Simplified Dark Matter models are demonstrated to be viable and allow for intriguing comparisons to relic density constraints.
Strongly self-interacting dark sectors are shown to leave a potentially measurable
imprint on the energy scaling of mediator production. The weak boson fusion induced production of hhjj turns out to be sensitive to a number of new physics
effects, including CP violation in the Higgs sector. The use of top polarisation measurements to discover new physics which predicts polarised resonances is shown to
be an effective way to ameliorate the loss of shape information for kinematically
challenging regions of parameter space.

• Item Type: Thesis (PhD)
• Qualification Level: Doctoral
• Keywords: Particle physics phenomenology, collider phenomenology, Higgs physics, dark matter physics, top quark physics.
• Subjects: Q Science > QC Physics
• Colleges/Schools: College of Science and Engineering > School of Physics and Astronomy
• Supervisor's Name: Englert, Dr. Christoph
• Date of Award: 2017
• Depositing User: Dr Karl Nordstrom
• Unique ID: glathesis:2017-8388
• Copyright: Copyright of this thesis is held by the author.
• Date Deposited: 13 Sep 2017 08:45
• Last Modified: 12 Oct 2017 07:57
• URI: http://theses.gla.ac.uk/id/eprint/8388