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dc.contributor.authorRichardson, Katherine
dc.date.accessioned2012-08-28T17:12:26Z
dc.date.available2012-08-28T17:12:26Z
dc.date.issued2012-08-28
dc.date.submittedJuly 2012
dc.identifier.urihttp://hdl.handle.net/1928/21068
dc.description.abstractIndirect detection of gamma rays, neutrinos and charged cosmic rays from dark matter annihilation sheds light on the identity of dark matter and compliments direct detection and collider dark matter searches. By testing for the annihilation rate as well as the elastic scattering cross section of dark matter and nucleons, indirect detection can probe beyond the standard neutralino dark matter candidate. In particular, annihilation product phenomenology is a tool for the exploration of the dark matter connection to the neutrino sector. The well-motivated U(1)_{B-L} extension of the Minimal Supersymmetric Model (MSSM) naturally includes the neutrino sector to explain neutrino masses and mixings. Two new B-L dark matter candidates arise: the right-handed sneutrino and a new neutralino. These each annihilate preferentially into leptons by virtue of the B-L charges. Chapters 3 and 4 show that the annihilation cross-section in either case can achieve a Sommerfeld enhancement that fits data from the PAMELA satellite showing an excess in the positron fraction but no excess in the antiproton spectrum. Chapter 5 demonstrates that the IceCube neutrino telescope can distinguish the annihilation of the right-handed sneutrino candidate into monochromatic neutrinos. In general, final states provide a distinctive signature that can discriminate among classes of dark matter models. Chapter 6 considers a model-independent study of monochromatic neutrino signals. Even with the current energy reconstruction capability, IceCube/DeepCore can detect gauge boson or tau annihilation even in the presence of monochromatic neutrino annihilation given ten years of data. Finally, tau regeneration is found to be a potential mechanism for differentiating neutrino flavor final states from one another.en_US
dc.description.sponsorshipNew Mexico Space Grant, Institute of Geophysics and Planetary Physics at Los Alamos National Laboratory Granten_US
dc.language.isoen_USen_US
dc.subjectDark matteren_US
dc.subjectIndirect detectionen_US
dc.subjectNeutrinosen_US
dc.subjectSneutrinosen_US
dc.subject.lcshDark matter (Astronomy)--Measurement.
dc.subject.lcshAnnihilation reactions.
dc.subject.lcshElastic cross sections.
dc.subject.lcshNeutrinos.
dc.subject.lcshSupersymmetry.
dc.titleIndirect detection signals beyond the simplest supersymmetric dark matteren_US
dc.typeDissertationen_US
dc.description.degreePhysicsen_US
dc.description.levelDoctoralen_US
dc.description.departmentUniversity of New Mexico. Dept. of Physics & Astronomyen_US
dc.description.advisorAllahverdi, Rouzbeh
dc.description.committee-memberFriedland, Alexander
dc.description.committee-memberFulghum, Julia
dc.description.committee-memberGold, Michael
dc.description.committee-memberLoomba, Dinesh
dc.description.committee-memberRoy, Mousumi


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