most citedHigher-order tree-level amplitudes in the nonlinear sigma model

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hep-th2019★ 16 cited

Higher-order tree-level amplitudes in the nonlinear sigma model

Johan Bijnens, Karol Kampf, Mattias Sjö

We present a generalisation of the flavour-ordering method applied to the chiral nonlinear sigma model with any number of flavours. We use an extended Lagrangian with terms contain…