CLAS physics database search results Measurement E62M424 E-94-005 CLAS experiment L. Elouadrhiri 2006 phi(pi-) dsigma/dphi_pim Data errors deg mcbn/rad mcbn/rad 45 0.627325 0.14848767 135 0.51654708 0.085074693 225 0.46574503 0.094355725 315 0.47798365 0.10540923