CLAS physics database search results Measurement E62M56 E-94-005 CLAS experiment L. Elouadrhiri 2006 psi(pi+) dsigma/dpsi_pip Data errors deg mcbn/rad mcbn/rad 60 1.1012344 0.29608172 180 1.1726197 0.14623138 299.99997 0.86565143 0.14003931