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Measuring the a0-a2 pion scattering lengths through $K \to 3 \pi$ decays
We discuss the recent Cabibbo's proposal to measure the pion-pion scattering lengths combination a0-a2 from the cusp effect in the pi0-pi0 energy spectrum at threshold for K+ to (pi0 pi0 pi+) and KL to (pi0 pi0 pi0). We estimate the theoretical uncertainty of the a0-a2 determination at NLO in o...
| Autores principales: | , , |
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| Lenguaje: | eng |
| Publicado: |
2006
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| Materias: | |
| Acceso en línea: | https://dx.doi.org/10.1016/j.nuclphysbps.2007.08.098 http://cds.cern.ch/record/993437 |