CLAS physics database search results Measurement E62M331 E-94-005 CLAS experiment L. Elouadrhiri 2006 psi(pi-) dsigma/dpsi_pim Data errors deg mcbn/rad mcbn/rad 36 2.3181884 0.2578373 108 2.2384059 0.24562345 180 1.9325016 0.2429854 251.99998 2.4109209 0.27893484 324 2.1760523 0.37471294