The Mainz Neutrino Mass Experiment test started in 2018 .
`` Considering its uncertainties this value corresponds to an upper limit on the electron neutrino mass of m < 2.2 eV/c2 ( 95 % Confidence Level ) '' '' The Mainz Neutrino Mass Experiment The latter will be tested in 2017 in the KATRIN experiment , that searches for a mass between and .A number of efforts are under way to directly determine the absolute neutrino mass scale in laboratory experiments . ''
Neutrino