Phenomenology for the Large Hadron Collider

QC Physics

Nordström, Karl Anders Mattias ; Englert, Christoph

University:University of Glasgow

Department:School of Physics and Astronomy

关键词: Particle physics phenomenology, collider phenomenology, Higgs physics,dark matter physics, top quark physics.;   

Others  :  http://theses.gla.ac.uk/8388/7/2017NordstromPhD.pdf

来源: University of Glasgow

【 摘 要 】

The search for physics Beyond the Standard Model is the underlying motivation forthe physics programme of the Large Hadron Collider at CERN. In this thesis wewill present studies into the Large Hadron Collider phenomenology of dark matterinspired extensions to the Standard Model, di-Higgs + 2 jet (hhjj) production, CPviolating effects in the Higgs sector, and the use of shape information from toppolarisation 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 measurableimprint 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 physicseffects, including CP violation in the Higgs sector. The use of top polarisation measurements to discover new physics which predicts polarised resonances is shown tobe an effective way to ameliorate the loss of shape information for kinematicallychallenging regions of parameter space.