Abstract
As first observed by the NA48/2 experiment at the CERN SPS, the π0 π0 invariant mass (M00) distribution from K± → π± π0 π0 decay shows a cusp-like anomaly at M00 = 2 m+, where m+ is the charged pion mass. An analysis to extract the ππ 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± → π± π0 π0 decays.
| Lingua originale | Inglese |
|---|---|
| pagine (da-a) | 101-108 |
| Numero di pagine | 8 |
| Rivista | Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics |
| Volume | 686 |
| Numero di pubblicazione | 2-3 |
| DOI | |
| Stato di pubblicazione | Pubblicato - 22 mar 2010 |
| Pubblicato esternamente | Sì |
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