Empirical parameterization of the K+- -> pi+- pi0 pi0 decay Dalitz plot

Details Empirical parameterization of the K+- -> pi+- pi0 pi0 decay Dalitz plot Empirical parameterization of the K+- -> pi+- pi0 pi0 decay Dalitz plot

2010-04-07

arxiv.org/abs/1004.1005v1

Physics Letters B 686 (2010) 101-108.

Physics

High Energy Physics

High Energy Physics - Experiment

9 pages, 3 figures.

Scientific paper

10.1016/j.physletb.2010.02.036

As first observed by the NA48/2 experiment at the CERN SPS, the $\p0p0$ invariant mass (M00) distribution from $\kcnn$ decay shows a cusp-like anomaly at M00=2m+, where m+ is the charged pion mass. An analysis to extract the pi pi scattering lengths in the isospin I=0 and I=2 states, a0 and a2, respectively, has been recently reported. In the present work the Dalitz plot of this decay is fitted to a new empirical parameterization suitable for practical purposes, such as Monte Carlo simulations of K+- -> pi+- pi0 pi0 decays.

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