Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1846841 | Nuclear Physics B - Proceedings Supplements | 2009 | 4 Pages |
Abstract
The NA48/2 collaboration has shown clear experimental evidence for a cusp in the data for K→ππ0π0. This effect can be used to extract information on the ππ scattering lengths. We address this issue using a two-loop dispersive construction of ππ→ππ and K→πππ amplitudes in the presence of isospin breaking.
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