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arXiv · 2107.06291

Six-pion amplitude

Johan Bijnens·Tomáš Husek
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Abstract

Within the framework of the massive O($N$) nonlinear sigma model extended to the next-to-leading order in the chiral counting (for $N=3$ corresponding to the two(-quark)-flavor Chiral Perturbation Theory), we calculate the relativistic six-pion scattering amplitude at low energy up to and including terms $\mathcal{O}(p^4)$. Results for the pion mass, decay constant and the four-pion amplitude in the case of $N$ (meson) flavors at $\mathcal{O}(p^4)$ are also presented.

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Johan Bijnens, Tomáš Husek. 2021-07-13. Six-pion amplitude. https://doi.org/10.1103/physrevd.104.054046

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