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University of Victoria

1. Liu, Ruochuan. Self-interacting dark matter of an SU(2) gauged dark sector.

Degree: Department of Physics and Astronomy, 2018, University of Victoria

This thesis investigates the possibility that the gauge boson in a certain hypothetical SU(2) gauged sector can constitute all the non-baryonic dark matter. The gauge bosons acquire mass from the Higgs mechanism as in the Standard Model and scatter elastically among themselves non-gravitationally. It is expected that this self interaction of the dark gauge bosons would resolve the various discrepancies between the ΛCDM model and astrophysical observations on small (e.g. galactic or galaxy cluster) scales. Parameter space within the domain of validity of perturbation theory satisfying the constraints of dark matter abundance, the elastic self-scattering momentum transfer cross-section suggested by recent astrophysical observations, and consideration of the Big-Bang nucleosynthesis was found to be non-empty in the “forbidden” regime where the mass of the dark Higgs boson is greater than the mass of the dark gauge boson. Advisors/Committee Members: Pospelov, Maxim (supervisor).

Subjects/Keywords: Self-interacting dark matter; Dark matter; Thermal dark matter; Non-abelian gauge theory; Yang-Mills theory; dark Higgs boson; Higgs mechanism; Higgs portal; Dark gauge boson; Massive gauge boson; Elastically self-interacting dark matter; SU(2)

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Liu, R. (2018). Self-interacting dark matter of an SU(2) gauged dark sector. (Masters Thesis). University of Victoria. Retrieved from https://dspace.library.uvic.ca//handle/1828/10026

Chicago Manual of Style (16th Edition):

Liu, Ruochuan. “Self-interacting dark matter of an SU(2) gauged dark sector.” 2018. Masters Thesis, University of Victoria. Accessed September 23, 2018. https://dspace.library.uvic.ca//handle/1828/10026.

MLA Handbook (7th Edition):

Liu, Ruochuan. “Self-interacting dark matter of an SU(2) gauged dark sector.” 2018. Web. 23 Sep 2018.

Vancouver:

Liu R. Self-interacting dark matter of an SU(2) gauged dark sector. [Internet] [Masters thesis]. University of Victoria; 2018. [cited 2018 Sep 23]. Available from: https://dspace.library.uvic.ca//handle/1828/10026.

Council of Science Editors:

Liu R. Self-interacting dark matter of an SU(2) gauged dark sector. [Masters Thesis]. University of Victoria; 2018. Available from: https://dspace.library.uvic.ca//handle/1828/10026

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