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

Peak search test

INSPIRE JSON (beta) PDGID:

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. • •

$<1 - 10 \times 10^{-4}$

CNTR

${\mathit m}_{{{\mathit \nu}_{{{x}}}}}$ = $30 - 33.91$ MeV

$<2 \times 10^{-5}$

95

${\mathit m}_{{{\mathit \nu}_{{{x}}}}}$=70 MeV

$<3 \times 10^{-6}$

95

${\mathit m}_{{{\mathit \nu}_{{{x}}}}}$=210 MeV

$<3 \times 10^{-6}$

95

${\mathit m}_{{{\mathit \nu}_{{{x}}}}}$=230 MeV

$<6 \times 10^{-6}$

95

${\mathit m}_{{{\mathit \nu}_{{{x}}}}}$=240 MeV

$<5 \times 10^{-7}$

95

${\mathit m}_{{{\mathit \nu}_{{{x}}}}}$=280 MeV

$<6 \times 10^{-6}$

95

${\mathit m}_{{{\mathit \nu}_{{{x}}}}}$=300 MeV

$<0.01$

95

${\mathit m}_{{{\mathit \nu}_{{{x}}}}}$=7 MeV

$<3 \times 10^{-3}$

95

${\mathit m}_{{{\mathit \nu}_{{{x}}}}}$=33 MeV

$<1 \times 10^{-4}$

68

THEO

${\mathit m}_{{{\mathit \nu}_{{{x}}}}}$=13 MeV

$<3 \times 10^{-5}$

68

THEO

${\mathit m}_{{{\mathit \nu}_{{{x}}}}}$=33 MeV

$<6 \times 10^{-3}$

68

THEO

${\mathit m}_{{{\mathit \nu}_{{{x}}}}}$=80 MeV

$<5 \times 10^{-3}$

68

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.

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