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Master Formula Approach to Chiral Symmetry Breaking: Pi-Pi scattering

James V. Steele·Hidenaga Yamagishi·Ismail Zahed
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Abstract

The master formula approach to chiral symmetry breaking is used to analyze the phase shifts for $ππ$ scattering in the elastic region. The results are in excellent agreement with the data for the phase shifts up to the K-K bar threshold. Our analysis shows that the pi-pi data near threshold in the scalar channel favors a large quark condensate in the vacuum, i.e. \sim -(240 MeV)^3.

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James V. Steele, Hidenaga Yamagishi, Ismail Zahed. 1995-05-28. Master Formula Approach to Chiral Symmetry Breaking: Pi-Pi scattering. https://doi.org/10.1016/s0375-9474(96)00488-5

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