${{\mathit W}^{+}}$ $\rightarrow$ invisible  Decay Mode Summary INSPIRE   PDGID:
S043.11
Mode Fraction ($\Gamma_i$ / $\Gamma$) Scale Factor/
Conf. Level
P(MeV/c)  
$\Gamma_{10}$ ${{\mathit W}^{+}}$ $\rightarrow$ invisible $0.014$ $\pm0.029$
Note: This represents the width for the decay of the ${{\mathit W}}~$boson into a charged particle with momentum below detectability, p$<200$ MeV.
The following data is related to the above value: