${{\mathit \tau}^{-}}$ $\rightarrow$ ${{\mathit f}_{{{1}}}{(1285)}}{{\mathit \pi}^{-}}{{\mathit \nu}_{{{\tau}}}}$ $\rightarrow$ ${{\mathit \eta}}{{\mathit \pi}^{-}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \nu}_{{{\tau}}}}$  Decay Mode Summary INSPIRE   JSON  (beta) PDGID:
S035.235
Mode (*) Fraction ($\Gamma_i$ / $\Gamma$) Scale Factor/
Conf. Level		 P(MeV/c)  
$\Gamma_{172}$ ${{\mathit \tau}^{-}}$ $\rightarrow$ ${{\mathit f}_{{{1}}}{(1285)}}{{\mathit \pi}^{-}}{{\mathit \nu}_{{{\tau}}}}$ $\rightarrow$ ${{\mathit \eta}}{{\mathit \pi}^{-}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \nu}_{{{\tau}}}}$ ($1.18$ $\pm0.07$) $ \times 10^{-4}$ S=1.3 
Category: Miscellaneous other allowed modes
The following data is related to the above value:
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$\Gamma({{\mathit \tau}^{-}}$ $\rightarrow$ ${{\mathit f}_{{{1}}}{(1285)}}{{\mathit \pi}^{-}}{{\mathit \nu}_{{{\tau}}}}$ $\rightarrow$ ${{\mathit \eta}}{{\mathit \pi}^{-}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \nu}_{{{\tau}}}})/\Gamma({{\mathit \tau}^{-}}$ $\rightarrow$ ${{\mathit \eta}}{{\mathit \pi}^{-}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \nu}_{{{\tau}}}}$ (ex.${{\mathit K}^{0}}))$
$\Gamma_{172}/\Gamma_{160}$
$\Gamma({{\mathit \tau}^{-}}$ $\rightarrow$ ${{\mathit f}_{{{1}}}{(1285)}}{{\mathit \pi}^{-}}{{\mathit \nu}_{{{\tau}}}}$ $\rightarrow$ ${{\mathit \eta}}{{\mathit \pi}^{-}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \nu}_{{{\tau}}}})/\Gamma_{\text{total}}$
$\Gamma_{172}/\Gamma$