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arXiv · 0807.5128

pi pi Phase shifts from K to 2 pi

V. Cirigliano·C. Gatti·M. Moulson·M. Palutan
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Abstract

We update the numerical results for the s-wave pi pi scattering phase-shift difference delta_0^0 - delta_0^2 at s = m_K^2 from a previous study of isospin breaking in K to 2 pi amplitudes in chiral perturbation theory. We include recent data for the K_S to pi pi and K^+ to pi^+ pi^0 decay widths and include experimental correlations.

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V. Cirigliano, C. Gatti, M. Moulson, M. Palutan. 2008-07-31. pi pi Phase shifts from K to 2 pi. https://arxiv.org/abs/0807.5128

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