TY - JOUR
T1 - Limits on the radiative decay of neutrinos
AU - Cowsik, R.
PY - 1977
Y1 - 1977
N2 - Astronomical observations at the x-ray, optical, and radio frequencies are used to show that the lifetime of neutrinos for radiative decay divided by the rest mass, τ0mν, exceeds 1017 sec/eV. If one makes the further assumption that mν>10-3 eV, then τ0>~1019 sec. If there are other competing decays of neutrinos, it is then shown that Γνe(νe→x+γ)Γνe(total)<~10-15 and Γνμ(νμ→x+γ)Γνμ(total)<~3×10-6.
AB - Astronomical observations at the x-ray, optical, and radio frequencies are used to show that the lifetime of neutrinos for radiative decay divided by the rest mass, τ0mν, exceeds 1017 sec/eV. If one makes the further assumption that mν>10-3 eV, then τ0>~1019 sec. If there are other competing decays of neutrinos, it is then shown that Γνe(νe→x+γ)Γνe(total)<~10-15 and Γνμ(νμ→x+γ)Γνμ(total)<~3×10-6.
UR - https://www.scopus.com/pages/publications/0011141242
U2 - 10.1103/PhysRevLett.39.784
DO - 10.1103/PhysRevLett.39.784
M3 - Article
AN - SCOPUS:0011141242
SN - 0031-9007
VL - 39
SP - 784
EP - 787
JO - Physical Review Letters
JF - Physical Review Letters
IS - 13
ER -