Limits on Coupling of ${{\mathit \mu}}$ to ${{\mathit \nu}_{{x}}}$ as Function of ${\mathit m}_{{{\mathit \nu}_{{x}}}}$

Peak search test

INSPIRE   PDGID:
S077U2A
Limits on $\vert \mathit U_{{{\mathit \mu}}\mathit x}\vert ^2$ as function of ${\mathit m}_{{{\mathit \nu}_{{x}}}}$
VALUE CL% DOCUMENT ID TECN  COMMENT
• • We do not use the following data for averages, fits, limits, etc. • •
$<1 - 10 \times 10^{-4}$ 1
BRYMAN
1996
CNTR ${\mathit m}_{{{\mathit \nu}_{{x}}}}$ = $30 - 33.91$ MeV
$<2 \times 10^{-5}$ 95 2
ASANO
1981
${\mathit m}_{{{\mathit \nu}_{{x}}}}$=70 MeV
$<3 \times 10^{-6}$ 95 2
ASANO
1981
${\mathit m}_{{{\mathit \nu}_{{x}}}}$=210 MeV
$<3 \times 10^{-6}$ 95 2
ASANO
1981
${\mathit m}_{{{\mathit \nu}_{{x}}}}$=230 MeV
$<6 \times 10^{-6}$ 95 3
ASANO
1981
${\mathit m}_{{{\mathit \nu}_{{x}}}}$=240 MeV
$<5 \times 10^{-7}$ 95 3
ASANO
1981
${\mathit m}_{{{\mathit \nu}_{{x}}}}$=280 MeV
$<6 \times 10^{-6}$ 95 3
ASANO
1981
${\mathit m}_{{{\mathit \nu}_{{x}}}}$=300 MeV
$<0.01$ 95
CALAPRICE
1981
${\mathit m}_{{{\mathit \nu}_{{x}}}}$=7 MeV
$<3 \times 10^{-3}$ 95 4
CALAPRICE
1981
${\mathit m}_{{{\mathit \nu}_{{x}}}}$=33 MeV
$<1 \times 10^{-4}$ 68 5
SHROCK
1981
THEO ${\mathit m}_{{{\mathit \nu}_{{x}}}}$=13 MeV
$<3 \times 10^{-5}$ 68 5
SHROCK
1981
THEO ${\mathit m}_{{{\mathit \nu}_{{x}}}}$=33 MeV
$<6 \times 10^{-3}$ 68 6
SHROCK
1981
THEO ${\mathit m}_{{{\mathit \nu}_{{x}}}}$=80 MeV
$<5 \times 10^{-3}$ 68 6
SHROCK
1981
THEO ${\mathit m}_{{{\mathit \nu}_{{x}}}}$=120 MeV
1  BRYMAN 1996 search for massive unconventional neutrinos of mass ${\mathit m}_{{{\mathit \nu}_{{x}}}}$ in ${{\mathit \pi}^{+}}$ decay. They interpret the result as an upper limit for the admixture of a heavy sterile or otherwise
2  ${{\mathit K}^{+}}$ $\rightarrow$ ${{\mathit \mu}^{+}}{{\mathit \nu}_{{\mu}}}$ peak search experiment.
3  Analysis of experiment on ${{\mathit K}^{+}}$ $\rightarrow$ ${{\mathit \mu}^{+}}{{\mathit \nu}_{{\mu}}}{{\mathit \nu}_{{x}}}{{\overline{\mathit \nu}}_{{x}}}$ decay.
4  ${{\mathit \pi}^{+}}$ $\rightarrow$ ${{\mathit \mu}^{+}}{{\mathit \nu}_{{\mu}}}$ peak search experiment.
5  Analysis of magnetic spectrometer experiment, bubble chamber experiment, and emulsion experiment on ${{\mathit \pi}^{+}}$ $\rightarrow$ ${{\mathit \mu}^{+}}{{\mathit \nu}_{{\mu}}}$ decay.
6  Analysis of magnetic spectrometer experiment on ${{\mathit K}}$ $\rightarrow$ ${{\mathit \mu}}$ , ${{\mathit \nu}_{{\mu}}}$ decay.
References:
BRYMAN 1996
PR D53 558 Search for Massive Neutrinos in ${{\mathit \pi}^{+}}$ $\rightarrow$ ${{\mathit \mu}^{+}}{{\mathit \nu}}$ Decay
ASANO 1981
PL 104B 84 Search for Heavy Neutrino Emitted in ${{\mathit K}^{+}}$ $\rightarrow$ ${{\mathit \mu}^{+}}{{\mathit \nu}}$ Decay
Also
PR D24 1232 General Theory of Weak Processes Involving Neutrinos. 1. Leptonic Pseudoscalar Meson Decays, with Associated Tests for, and Bounds on, Neutrino Masses and Lepton Mixing
CALAPRICE 1981
PL 106B 175 Search for Finite Mass Neutrinos in the Decay ${{\mathit \pi}^{+}}$ $\rightarrow$ ${{\mathit \mu}^{+}}{{\mathit \nu}_{{\mu}}}$
SHROCK 1981
PR D24 1232 General Theory of Weak Processes Involving Neutrinos. 1. Leptonic Pseudoscalar Meson Decays, with Associated Tests for, and Bounds on, Neutrino Masses and Lepton Mixing