CLAS physics database search results Measurement E62M67 E-94-005 CLAS experiment L. Elouadrhiri 2006 psi(pi-) dsigma/dpsi_pim Data errors deg mcbn/rad mcbn/rad 36 1.6889038 0.24219956 108 1.7099745 0.22550848 180 1.0659809 0.26848406 251.99998 1.8472054 0.24690536 324 1.5066162 0.24045557