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Pi Pi scattering in an effective chiral Lagrangian

Masayasu Harada
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Abstract

In this talk I summarize a recently proposed mechanism to understand pi pi scattering to 1 GeV. The model is motivated by the 1/Nc expansion to QCD, and includes a current algebra contact term and resonant pole exchanges. Chiral symmetry plays an important role in restricting the form of the interactions. The existence of a broad low energy scalar (sigma) is indicated.

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Masayasu Harada. 1996-06-14. Pi Pi scattering in an effective chiral Lagrangian. https://arxiv.org/abs/hep-ph/9606331

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