CLAS physics database search results Measurement E1M666 E93-006 CLAS experiment V. D. Burkert, M. Ripani 2003 psi(pi-) dsigma/dpsi_pim Stat. error deg mcbn/rad mcbn/rad 36 2.4116724 0.14698884 108 2.8196394 0.21242616 180 2.8744593 0.17650619 251.99998 2.5836771 0.18211825 324 2.2694097 0.17353587