# ${{\boldsymbol K}^{+}}$ LONGITUDINAL POLARIZATION OF EMITTED ${{\boldsymbol \mu}^{+}}$ INSPIRE search

VALUE CL% DOCUMENT ID TECN CHG  COMMENT
$\bf{<-0.990}$ 90 1
 1994
SPEC +
• • • We do not use the following data for averages, fits, limits, etc. • • •
$<-0.990$ 90
 1992
SPEC + Repl. by AOKI 1994
$-0.970$ $\pm0.047$ 2
 1986
SPEC +
$-1.0$ $\pm0.1$ 2
 1969
SPRK +
$-0.96$ $\pm0.12$ 2
 1957
CNTR +
1  AOKI 1994 measures $\xi \mathit P_{\mu }$ =$-0.9996$ $\pm0.0030$ $\pm0.0048$. The above limit is obtained by summing the statistical and systematic errors in quadrature, normalizing to the physically significant region ($\vert \xi \mathit P_{\mu }\vert <1$) and assuming that $\xi$=1, its maximum value.
2  Assumes $\xi$=1.
References:
 AOKI 1994
PR D50 69 Search for Right-Handed Currents in the Decay Chain of ${{\mathit K}^{+}}$ $\rightarrow$ ${{\mathit \mu}^{+}}{{\mathit \nu}_{{\mu}}}$ , ${{\mathit \mu}^{+}}$ $\rightarrow$ ${{\mathit e}^{+}}{{\mathit \nu}_{{e}}}{{\overline{\mathit \nu}}_{{\mu}}}$
 IMAZATO 1992
PRL 69 877 Search for Right Handed Currents in the Decay Chain ${{\mathit K}^{+}}$ $\rightarrow$ ${{\mathit \mu}^{+}}{{\mathit \nu}}$ , ${{\mathit \mu}^{+}}$ $\rightarrow$ ${{\mathit e}^{+}}{{\mathit \nu}}{{\overline{\mathit \nu}}}$
 YAMANAKA 1986
PR D34 85 Search for Right-Handed Currents in the Decay ${{\mathit K}^{+}}$ $\rightarrow$ ${{\mathit \mu}^{+}}{{\mathit \nu}_{{\mu}}}$
 CUTTS 1969
PR 184 1380 Measurement of the Muon Polarization Vector in ${{\mathit K}^{+}}$ $\rightarrow$ ${{\mathit \pi}^{0}}{{\mathit \mu}^{+}}{{\mathit \nu}}$
 COOMBES 1957
PR 108 1348 Polarization of ${{\mathit \mu}^{+}}$ Mesons from the Decay of ${{\mathit K}^{+}}$ Mesons