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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...

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Detalles Bibliográficos
Autores principales:	Scimemi, Ignazio, Gamiz, Elvira, Prades, Joaquim
Lenguaje:	eng
Publicado:	2006
Materias:	Particle Physics - Phenomenology
Acceso en línea:	https://dx.doi.org/10.1016/j.nuclphysbps.2007.08.098 http://cds.cern.ch/record/993437

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