CLAS physics database search results Measurement E159M577 E1-6 V. Burkert 2001 psi(pi+) dsigma/dpsi_pip Data errors deg mcb/rad mcb/rad 30 0.510182 0.0772237 90 0.495874 0.0712996 150 0.544776 0.0790613 210 0.487358 0.0721091 270 0.448615 0.0659985 330 0.488134 0.0728554