${{\mathit a}_{{{1}}}{(1640)}}$ $\rightarrow$ ${{\mathit a}_{{{1}}}{(1260)}}{{\mathit \eta}}$  Decay Mode Summary INSPIRE   PDGID:
M161.8
Mode Fraction ($\Gamma_i$ / $\Gamma$) Scale Factor/
Conf. Level		 P(MeV/c)  
$\Gamma_{8}$ ${{\mathit a}_{{{1}}}{(1640)}}$ $\rightarrow$ ${{\mathit a}_{{{1}}}{(1260)}}{{\mathit \eta}}$ not seen -1
The following data is related to the above value:
$\Gamma($ ${{\mathit a}_{{{1}}}{(1640)}}$ $\rightarrow$ ${{\mathit a}_{{{1}}}{(1260)}}{{\mathit \eta}})/\Gamma_{\text{total}}$
$\Gamma_{8}/\Gamma$