SUSY dark matter and lepton flavor violation

Abstract

We study lepton flavor-violating (LFV) processes within a supersymmetric type-I seesaw framework with flavor-blind universal boundary conditions, properly accounting for the effect of the neutrino sector on the dark matter relic abundance. We consider several possibilities for the neutrino Yukawa coupling matrix and show that in regions of SUSY parameter space that yield the correct neutralino relic density, LFV rates can differ from naive estimates by up to two orders of magnitude. Contrary to common belief, we find that current LFV limits do not exclude neutrino Yukawa couplings larger than top Yukawa couplings. We introduce the ISAJET-M program that was used for the computations.

37 pages, 9 figures, 6 tables. Version to appear in PRD

References in corpus (9)

• Unification and Fermion Mass Structure
• Soft SUSY Breaking Grand Unification: Leptons vs Quarks on the Flavor Playground
• $\mu -e$ conversion in nuclei within the CMSSM seesaw: universality versus non-universality
• Search for Lepton Flavor Violating tau Decays into Three Leptons
• Neutrino sector impacts SUSY dark matter
• Overview of Neutrino Mixing Models and Ways to Differentiate among Them
• Twenty Years of SUGRA
• Lepton Flavour Violation in the Constrained MSSM with Constrained Sequential Dominance
• TASI Lectures on AstroParticle Physics