#### ${{\mathit \nu}}$ MASS (electron based)

These are measurement of ${\mathit m}_{{{\mathit \nu}}}$ (in contrast to ${\mathit m}_{{{\overline{\mathit \nu}}}}$, given above). The masses can be different for a Dirac neutrino in the absence of $\mathit CPT$ invariance. The possible distinction between ${{\mathit \nu}}$ and ${{\overline{\mathit \nu}}}$ properties is usually ignored elsewhere in these Listings.

VALUE (eV) CL% DOCUMENT ID TECN  COMMENT
$<460$ 68
 1994
CNTR ${}^{163}\mathrm {Ho}$ decay
$<225$ 95
 1987
CNTR ${}^{163}\mathrm {Ho}$ decay
References:
 YASUMI 1994
PL B334 229 The Mass of the Electron Neutrino from Electron Capture in ${}^{163}\mathrm {Ho}$
 SPRINGER 1987
PR A35 679 Measurement of the Neutrino Mass Using the Inner Bremsstrahlung Emitted in the Electron-Capture Decay og ${}^{163}\mathrm {Ho}$