1995/05/28 by James V. Steele, Hidenaga Yamagishi, Ismail Zahed +1
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph
paper · pdf · doi:10.1016/s0375-9474(96)00488-5
published as Nucl.Phys. A615 (1997) 305-324 · 17 pages, LaTeX, 1 postscript file of 12 figures in addition. Equation 2 is changed, the rest is the same
arxiv created 1995/05/28 · openalex publication_date 1997/03/01 · arxiv updated 2009/11/30 · openalex created_date 2017/04/07 · openalex updated_date 2026/07/28
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. <q bar q> ∼ -(240 MeV)3.