CLAS physics database search results Measurement E62M52 E-94-005 CLAS experiment L. Elouadrhiri 2006 phi(pi-) dsigma/dphi_pim Data errors deg mcbn/rad mcbn/rad 45 1.5127031 0.3535246 135 0.7158953 0.11486457 225 0.83438617 0.15490966 315 0.84087038 0.16178893