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Título

Stau detection at neutrino telescopes in scenarios with supersymmetric dark matter

AutorCañadas, Beatriz ; Cerdeño, David G. ; Muñoz, Carlos ; Panda, Sukanta
Palabras claveDark matter
UItra high energy photons and neutrinos
Cosmology of theories beyond the SM
Fecha de publicación27-abr-2009
EditorInstitute of Physics Publishing
International School for Advanced Studies
CitaciónJournal of High Energy Physics 04(028): (20099
ResumenWe have studied the detection of long-lived staus at the IceCube neutrino telescope, after their production inside the Earth through the inelastic scattering of high energy neutrinos. The theoretical predictions for the stau flux are calculated in two scenarios in which the presence of long-lived staus is naturally associated to viable supersymmetric dark matter. Namely, we consider the cases with superWIMP (gravitino or axino) and neutralino dark matter (along the coannihilation region). In both scenarios the maximum value of the stau flux turns out to be about 1 event/yr in regions with a light stau. This is consistent with light gravitinos, with masses constrained by an upper limit which ranges from 0.2 to 15 GeV, depending on the stau mass. Likewise, it is compatible with axinos with a mass of about 1 GeV and a very low reheating temperature of order 100 GeV. In the case of the neutralino dark matter this favours regions with a low value of tan β, for which the neutralino-stau coannihilation region occurs for smaller values of the stau mass. Finally, we study the case of a general supergravity theory and show how for specific choices of non-universal soft parameters the predicted stau flux can increase moderately.
Descripción26 pages, 7 figures.-- Pre-print archive.
Versión del editorhttp://dx.doi.org/10.1088/1475-7516/2009/04/028
URIhttp://hdl.handle.net/10261/17831
DOI10.1088/1475-7516/2009/04/028
ISSN1126-6708
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