CLAS physics database search results Measurement E62M308 E-94-005 CLAS experiment L. Elouadrhiri 2006 psi(pi+) dsigma/dpsi_pip Data errors deg mcbn/rad mcbn/rad 60 0.36651725 0.10288154 180 0.92502755 0.13730328 299.99997 0.50349689 0.10090656