dc.contributor.advisor Marfatia, Danny dc.contributor.author Sessolo, Enrico Maria dc.date.accessioned 2010-12-29T03:39:57Z dc.date.available 2010-12-29T03:39:57Z dc.date.issued 2010-01-01 dc.date.submitted 2010 dc.identifier.other http://dissertations.umi.com/ku:11040 dc.identifier.uri http://hdl.handle.net/1808/6929 dc.description.abstract We introduce recent research topics in beyond the Standard Model particle physics with Supersymmetry. In the first part we implement a new, extended approach to placing bounds on trilinear R-parity violating couplings. We focus on a limited set of leptonic and semi-leptonic processes involving neutrinos, combining multidimensional plotting and cross-checking constraints from different experiments. This allows us to explore new regions of parameter space and to relax a number of bounds given in the literature. We look for qualitatively different results compared to those obtained previously using the assumption that a single coupling dominates the R-parity violating contributions to a process. In the second part we investigate the prospects for indirect detection of fermion WIMPless dark matter at the neutrino telescopes IceCube and DeepCore. The dark matter annihilating in the Sun is a hidden sector Majorana fermion that couples through Yukawa couplings to a connector particle and a visible sector particle, and it exhibits only spin-dependent scattering with nuclei via couplings to first generation quarks. We consider cases where the annihilation products are taus, staus, or sneutrinos of the three generations. To evaluate the muon fluxes incident at the detector, we propagate the neutrino spectra through the solar medium and to the Earth and account for the effects of neutrino oscillations, energy losses due to neutral- and charged-current interactions, and tau regeneration. We find that for the stau and sneutrino channels, a 5 yr 3$sigma$ detection of dark matter lighter than about 300~GeV is possible at IceCube for large Yukawa couplings or for dark matter and connector particles with similar masses. The tau channel offers far better detection prospects. However, due to its lower energy threshold and better muon background rejection capability, DeepCore is able to detect signals in all annihilation channels and for a wider range of dark matter masses. dc.format.extent 100 pages dc.language.iso en dc.publisher University of Kansas dc.rights This item is protected by copyright and unless otherwise specified the copyright of this thesis/dissertation is held by the author. dc.subject Elementary particles and high energy physics dc.subject Dark matter dc.subject Phenomenology dc.subject Supersymmetry dc.title Beyond the Standard Model with Supersymmetry dc.type Dissertation dc.contributor.cmtemember Feldman, Hume A dc.contributor.cmtemember Lerner, David dc.contributor.cmtemember McKay, Douglas dc.contributor.cmtemember Ralston, John dc.thesis.degreeDiscipline Physics & Astronomy dc.thesis.degreeLevel Ph.D. kusw.oastatus na kusw.oapolicy This item does not meet KU Open Access policy criteria. dc.rights.accessrights openAccess
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