CLAS physics database search results Measurement E159M421 E1-6 V. Burkert 2001 M(pi+,pi-) dsigma/dM(pip pim) Data errors GeV mcb/GeV mcb/GeV 0.353395 2.69559 0.442905 0.421903 5.26262 0.82746 0.490413 6.06135 0.956002 0.558922 6.46878 0.965907 0.62743 9.28974 1.39556 0.695939 11.4026 1.6489 0.764448 14.0966 2.04475 0.832958 9.29541 1.47309 0.901466 5.05709 0.776236 0.969975 2.71497 0.457592