PPT Slide
New Background parameterization in the Dalitz analyses
- There are evidences of resonant background contribution in KKp and ppp Dalitz Plot.
Until now we have used only a polynomial of 1o order and high S/N ratio for the
Dalitz Plot sample to reduce the bckg dependencies in the fit.
- Now we use a polynomial of 2o order + of Breit-Wigner (efficiency weighted)
for the bckg resonances :
- K*0 (892) and f (1020) in KKp bckg
- f o(980) and r(770) in ppp bckg
since we are working with high S/N samples we do not expect great improvements