CLAS physics database search results Measurement E62M427 E-94-005 CLAS experiment L. Elouadrhiri 2006 psi(pi-) dsigma/dpsi_pim Data errors deg mcbn/rad mcbn/rad 60 0.51967376 0.091921732 180 0.53733915 0.10931101 299.99997 0.50868756 0.085632786