Measurement of the $\eta\to\pi^+\pi^-\pi^0$ Dalitz plot distribution
  Dalitz plot distribution of the $\eta\to\pi^+\pi^-\pi^0$ decay is determined using a data sample of $1.2\cdot 10^7$ $\eta$ mesons from $pd\to ^3\textrm{He}\eta$ reaction at 1 GeV collected by the WASA detector at COSY. 
P. Adlarson, W. Augustyniak, W. Bardan, M. Bashkanov, F.S. Bergmann,   M. Ber{\l}owski, H. Bhatt, A. Bondar, M. B\"uscher, H...
hep-ex nucl-ex