English

SUSY dark matter and lepton flavor violation

High Energy Physics - Phenomenology 2009-10-16 v2 Cosmology and Nongalactic Astrophysics High Energy Physics - Experiment

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.

Keywords

Cite

@article{arxiv.0908.0941,
  title  = {SUSY dark matter and lepton flavor violation},
  author = {Vernon Barger and Danny Marfatia and Azar Mustafayev and Ali Soleimani},
  journal= {arXiv preprint arXiv:0908.0941},
  year   = {2009}
}

Comments

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