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Kinematically complete measurement of the reaction pi- p ---> pi+ pi- n in the region of Delta dominance as a test of chiral Lagrangians

Ortner, H.W. ; Baran, R. ; Bohnert, U. ; et al.
Phys.Rev.Lett. 64 (1990) 2759-2762, 1990.
Inspire Record 302426 DOI 10.17182/hepdata.19971

The first kinematically complete, good-statistics data for the (π,2π) reaction on the proton are presented. They involve double- and triple-differential cross sections as well as π+π− angular correlations. At energies around the Δ resonance, they exhibit a marked difference from phase space. The data are qualitatively described within the framework of an extension of Weinberg’s effective chiral Lagrangian.

2 data tables
Table 1

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Table 2

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