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arXiv · hep-ph/0405001

Determination of the a0-a2 pion scattering length from K->pi+ pi0 pi0 decay

Nicola Cabibbo
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Abstract

We present a new method for the determination of the pion-pion scattering lenght combination a0-a2, based on the study of the pi0-pi0 spectrum in K->pi+ pi0 pi0 in the vicinity of the pi+ pi- threshold. The method requires a minimum of theoretical input, and is potentially very accurate.

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Nicola Cabibbo. 2004-05-04. Determination of the a0-a2 pion scattering length from K->pi+ pi0 pi0 decay. https://doi.org/10.1103/physrevlett.93.121801

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