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

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

1995-05-17

arxiv.org/abs/hep-ph/9505330v2

Nucl.Phys. A615 (1997) 305-324

Physics

High Energy Physics

High Energy Physics - Phenomenology

17 pages, LaTeX, 1 postscript file of 12 figures in addition. Equation 2 is changed, the rest is the same

Scientific paper

10.1016/S0375-9474(96)00488-5

The master formula approach to chiral symmetry breaking is used to analyze the phase shifts for $\pi\pi$ 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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