The events are given as 4-vectors : Energy, Px,Py,Pz

The events are available as the acceptance corrected Dalitz plot with 3595 cells.

The particles are counted as 1- eta, 2 - pi, 3 - eta and the data are given as:

3595

s12 s23 s13 Fraction_of_cell_area Events Error

……………..

Here s12, s23 and s13 are invariant energies squared of the two meson system (MeV²)

and Fraction_of_cell_area is the ratio of cell area to the area of the largest cell.

For these data Fraction_of_cell_area=1: all cells at the boundary are removed.

The background level for these events is less than 1%.