PT Journal AU Chen, P Centelles Chulia, S Ding, GJ Srivastava, R Valle, JWF TI CP symmetries as guiding posts: revamping tri-bi-maximal mixing. Part I SO Journal of High Energy Physics JI J. High Energy Phys. PY 2019 BP 036 EP 27pp VL 03 IS 3 DI 10.1007/JHEP03(2019)036 LA English DE CP violation; Discrete Symmetries; Neutrino Physics AB We analyze the possible generalized CP symmetries admitted by the Tri-Bi-Maximal (TBM) neutrino mixing. Taking advantage of these symmetries we construct in a systematic way other variants of the standard TBM Ansatz. Depending on the type and number of generalized CP symmetries imposed, we get new mixing matrices, all of which related to the original TBM matrix. One of such revamped TBM variants is the recently discussed mixing matrix of arXiv:1806.03367. We also briefly discuss the phenomenological implications following from these mixing patterns. ER