Catalyzed Big Bang Nucleosynthesis and the properties of charged relics in the early universe

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dc.contributor.author Koopmans, Kristen Alanna
dc.date.accessioned 2007-08-27T23:55:55Z
dc.date.available 2007-08-27T23:55:55Z
dc.date.copyright 2007 en_US
dc.date.issued 2007-08-27T23:55:55Z
dc.identifier.uri http://hdl.handle.net/1828/207
dc.description.abstract The existence of charged electroweak-scale particles in the early universe can drastically affect the evolution of elemental abundances. Through the formation of Coulombic bound states with light nuclei, these exotic relic particles (hereafter referred to as X–) act to catalyze nuclear reactions by reducing their threshold energies. This thesis examines the properties of the X– bound states, and uses primordial element observations to constrain the abundance, lifetime, and mass of this exotic particle species. If the X– is a Dirac Fermion, its abundance relative to baryons is found to be YX- ~ 0.01, with a lifetime of 1500s ≤ τX- ≤ 3000s, and a mass of order 100 GeV. Assuming that the X– is a Scalar particle that decays into gravitinos, the resulting bounds become, 5x10-4 ≤ YX- ≤ 0.07, 1600s ≤ τX- ≤ 7000s, and 60GeV ≤ mX- ≤ 1000GeV. These ranges are consistent with Dark Matter constraints. en_US
dc.language English eng
dc.language.iso en en_US
dc.rights Available to the World Wide Web en_US
dc.subject Particle Physics en_US
dc.subject Phenomenology en_US
dc.subject Cosmology en_US
dc.subject Early Universe en_US
dc.subject Super Symmetry en_US
dc.subject Nucleosynthesis en_US
dc.subject.lcsh UVic Subject Index::Sciences and Engineering::Physics en_US
dc.title Catalyzed Big Bang Nucleosynthesis and the properties of charged relics in the early universe en_US
dc.type Thesis en_US
dc.contributor.supervisor Pospelov, Maxim
dc.degree.department Dept. of Physics and Astronomy en_US
dc.degree.level Master of Science M.Sc. en_US

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