I will discuss several phenomenological aspects of the supersymmetric version of the triplet-seesaw mechanism for neutrino mass generation. After a brief introduction, some features regarding the predictivity of the mechanism will be emphasized and the predictions regarding several lepton flavour violating (LFV) processes presented. Some examples of such processes are: radiative ($l_j to l_i gamma$) and three-body LFV charged-lepton decays ($muto 3e, tau to 3mu$, etc). The dependence of the results on the low-enery neutrino parameters (mixing angles, masses and CP-phases) will be analysed. In the second part of the seminar, I will focus on the renormalization group corrections induced on the neutrino mass and mixing parameters due to the presence of the heavy triplet states. The impact of these “running effects” on the rates of the above mentioned LFV processes will be briefly discussed.

CERN-TH