Measurement of the $η\toπ^+π^-π^0$ Dalitz plot distribution

Abstract

Dalitz plot distribution of the $η\toπ^+π^-π^0$ decay is determined using a data sample of $1.2\cdot 10^7$ $η$ mesons from $pd\to ^3\textrm{He}η$ reaction at 1 GeV collected by the WASA detector at COSY.

13 pages, 6 figures