Inverse see-saw neutrino masses in the Littlest Higgs model with T-parity Águila Giménez, Francisco Del Illana Calero, José Ignacio Pérez Poyatos, José María Santiago Pérez, José Beyond Standard Model Neutrino physics We show that the inverse see-saw is the most natural way of implementing neutrino masses in the Littlest Higgs model with T-parity. The three extra quasi-Dirac neutrinos are needed to cancel the quadratically divergent contributions of the mirror leptons to the Higgs mass. If the T-parity of the heavy neutrino singlets is chosen to be even, their contributions to lepton avor violating transitions are one-loop nite. The most stringent limits on this scenario result from the non-observation of these transitions. Constraints on neutrino mixing imply an upper bound on the mass of the T-odd mirror leptons at the reach of the LHC and/or future colliders. 2020-02-13T10:08:39Z 2020-02-13T10:08:39Z 2019-12-23 info:eu-repo/semantics/article del Aguila, F., Illana, J. I., Perez-Poyatos, J. M., & Santiago, J. (2019). Inverse see-saw neutrino masses in the Littlest Higgs model with T-parity. Journal of High Energy Physics, 2019(12), 1-21. http://hdl.handle.net/10481/59639 10.1007/JHEP12(2019)154 eng http://creativecommons.org/licenses/by/3.0/es/ info:eu-repo/semantics/openAccess Atribución 3.0 España Springer Nature