Self-interacting dark matter of an SU(2) gauged dark sector

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dc.contributor.authorLiu, Ruochuan
dc.contributor.supervisorPospelov, Maxim
dc.date.accessioned2018-09-04T19:02:09Z
dc.date.available2018-09-04T19:02:09Z
dc.date.copyright2018en_US
dc.date.issued2018-09-04
dc.degree.departmentDepartment of Physics and Astronomyen_US
dc.degree.levelMaster of Science M.Sc.en_US
dc.description.abstractThis 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.en_US
dc.description.scholarlevelGraduateen_US
dc.identifier.urihttp://hdl.handle.net/1828/10026
dc.languageEnglisheng
dc.language.isoenen_US
dc.rightsAvailable to the World Wide Weben_US
dc.subjectSelf-interacting dark matteren_US
dc.subjectDark matteren_US
dc.subjectThermal dark matteren_US
dc.subjectNon-abelian gauge theoryen_US
dc.subjectYang-Mills theoryen_US
dc.subjectdark Higgs bosonen_US
dc.subjectHiggs mechanismen_US
dc.subjectHiggs portalen_US
dc.subjectDark gauge bosonen_US
dc.subjectMassive gauge bosonen_US
dc.subjectElastically self-interacting dark matteren_US
dc.subjectSU(2)en_US
dc.titleSelf-interacting dark matter of an SU(2) gauged dark sectoren_US
dc.typeThesisen_US

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