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

INSPIRE   JSON  (beta) PDGID:
S066MNE
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.

S066MNE
VALUE (eV) CL% DOCUMENT ID TECN  COMMENT
$\bf{<27}$ 90 1
ALPERT
2025
 
CNTR ${}^{163}\mathrm {Ho}$ decay
• • We do not use the following data for averages, fits, limits, etc. • •
$<460$ 68
YASUMI
1994
 
CNTR ${}^{163}\mathrm {Ho}$ decay
$<225$ 95
SPRINGER
1987
 
CNTR ${}^{163}\mathrm {Ho}$ decay
1  ALPERT 2025 report a kinematical neutrino mass limit, derived from observing $6 \times 10^{7}{}^{163}\mathrm {Ho}$ EC-decays. The HOLMES bolometric micro-calorimeter array is used.
References