Neutrino mass measurement and sterile neutrinos search with the KATRIN experiment

In this proceeding, we report on the latest results of KATRIN experiment effective electron anti-neutrino mass and search for sterile neutrinos. performed a high resolution statistics spectroscopy measurement tritium β -decay spectrum around its endpoint energy. The analysis ~ 1265 h data acquired during first two campaigns 2019 led to most stringent limit neutrino with m ν < 0.8 eV- (90% CL). We also improved exclusion limits keV-scale neutrinos search. Finally, future TRISTAN detector aiming at further improve laboratory-based sensitivity is discussed.