Late leptogenesis from radiative soft terms
Eung Jin Chun · Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields · 2004
We point out that the so-called soft leptogenesis can occur at the TeV scale if the B term is generated through radiative corrections which involve two-loop diagrams with the gaugino exchange. This mechanism requires the nontrivial CP phase, $\mathrm{Im}{(Am}_{1/2}^{*})\ensuremath{ e}0,$ and can naturally explain the observed baryon asymmetry of the Universe associated with the TeV scale seesaw mechanism. Such a low scale leptogenesis would be a promising option in view of the tight upper limit on the reheat temperature avoiding the gravitino problem in supergravity models.