Dalitz Plot Analysis of η' → η π+ π-.

In this talk we present preliminary experimental results on the Dalitz plot analysis of the decay η' → η π+ π- based on the CLAS data collected during photo production experiment γ p → η' p for the center-of-mass energy from 1.96 to 2.72 GeV at Jefferson Lab. The analysis is based on the highest statistics collected in this channel in comparison to other experiments reported so far. The high statistics will enable us to report precise statistical error of Dalitz plot parameters. [ABSTRACT FROM AUTHOR]