Czyzewski, O.
PI+ P --> PI+ PI+ N
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Resonance production by 8 GeV/c positive pions on protons

The Aachen-Berlin-CERN collaboration Deutschmann, M. ; Schulte, R. ; Weber, H. ; et al.
Phys.Lett. 12 (1964) 356-360, 1964.
Inspire Record 1389790 DOI 10.17182/hepdata.30824

None

1 data table
Table 1

Cross sections based on total PI+ P cross section =25.8 mb (Vondardel, PRL 8, 173 (1962)).


Experimental study of the near threshold pi+ p ---> pi+ pi+ n cross-section and chiral symmetry

Sevior, M.E. ; Ambardar, A. ; Brack, J.T. ; et al.
Phys.Rev.D 48 (1993) 3987-3995, 1993.
Inspire Record 364198 DOI 10.17182/hepdata.22551

Total cross-section measurements of the π+p→π+π+n reaction at pion kinetic energies of 180, 184, 190, and 200 MeV are reported. The threshold value for the amplitude a(π+π+) as well as the s-wave, isospin 2, ππ scattering length a20 were determined. The results were found to be in agreement with chiral perturbation theory and inconsistent with the calculations of Jacob and Scadron and the model of dominance by quark loop anomalies.

1 data table
Table 1

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