Lepton Flavor Violation and Supersymmetric Dirac Leptogenesis

Details Lepton Flavor Violation and Supersymmetric Dirac Leptogenesis Lepton Flavor Violation and Supersymmetric Dirac Leptogenesis

2006-07-26

arxiv.org/abs/hep-ph/0607285v2

Phys.Rev.D75:013013,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

15 pages, 4 figures, corrected parametric dependance on leading LFV term, figure 2 and discussion modified accordingly, conclu

Scientific paper

10.1103/PhysRevD.75.013013

Dirac leptogenesis (or Dirac neutrinogenesis), in which neutrinos are purely Dirac particles, is an interesting alternative to the standard leptogenesis scenario. In its supersymmetric version, the modified form of the superpotential required for successful baryogenesis contributes new, generically non-flavor-diagonal terms to the slepton and sneutrino mass matrices. In this work, we examine how current experimental bounds on flavor-changing effects in the lepton sector (and particularly the bound on Mu -> e Gamma) constrain Dirac leptogenesis and we find that it is capable of succeeding with superpartner masses as low as 100 GeV. For such light scalars and electroweakinos, upcoming experiments such as MEG are generically expected to observe signals of lepton flavor violation.

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