2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/190499In spite of the large lepton flavour violation (LFV) observed in neutrino oscillations, within the Standard Model, we do \textit{not} expect any visible LFV in the charged lepton sector ($μ\to e, γ$, $τ\to μ, γ$, etc.). On the contrary, the presence of new physics close to the electroweak scale can enhance the amplitudes of these processes. We discuss this in general and focus on a particularly interesting case: the marriage of low-energy supersymmetry (SUSY) and seesaw mechanism for neutrino masses (SUSY seesaw). Several ideas presented in this context are reviewed both in the bottom-up and top-down approaches. We show that there exist attractive models where the rate for LFV processes can attain values to be probed in pre-LHC experiments.23 pages, 5 figures. Submitted to the New Journal of Physics, focus Issue on 'Neutrino Physics' edited by F. Halzen, M. Lindner and A. Suzuki. v2: Added references and corrected typos. To be published versionHigh Energy Physics - Phenomenologytext