CLAS physics database search results Measurement E62M437 E-94-005 CLAS experiment L. Elouadrhiri 2006 phi(pi+) dsigma/dphi_pip Data errors deg mcbn/rad mcbn/rad 36 1.2968082 0.15015751 108 0.97004408 0.14321132 180 1.2134478 0.38912645 251.99998 0.94771588 0.12522571 324 1.5739214 0.22172867