CLAS physics database search results Measurement E62M305 E-94-005 CLAS experiment L. Elouadrhiri 2006 phi(pi+) dsigma/dphi_pip Data errors deg mcbn/rad mcbn/rad 45 0.64832902 0.13784686 135 0.62704307 0.16598621 225 0.47617331 0.12050208 315 0.64184356 0.096745677