CLAS physics database search results Measurement E62M187 E-94-005 CLAS experiment L. Elouadrhiri 2006 psi(pi-) dsigma/dpsi_pim Data errors deg mcbn/rad mcbn/rad 60 0.61260891 0.13262363 180 0.67202961 0.15456937 299.99997 0.53258514 0.099369176