CLAS physics database search results Measurement E62M628 E-94-005 CLAS experiment L. Elouadrhiri 2006 phi(pi-) dsigma/dphi_pim Data errors deg mcbn/rad mcbn/rad 45 0.59977394 0.15345618 135 0.55664313 0.13494948 225 0.52210516 0.14114963 315 0.43817529 0.1184101