CLAS physics database search results Measurement E159M61 E1-6 V. Burkert 2001 M(pi+,pi-) dsigma/dM(pip pim) Data errors GeV mcb/GeV mcb/GeV 0.323895 8.68349 1.59663 0.353404 9.66777 1.57637 0.382912 12.6375 1.93709 0.412421 13.3327 2.06782 0.441931 15.6729 2.3223 0.47144 14.926 2.19942 0.500948 18.1453 2.56449 0.530457 15.1971 2.14757 0.559967 13.9479 2.05016 0.589476 10.6162 1.57162