CLAS physics database search results Measurement E159M513 E1-6 V. Burkert 2001 psi(pi-) dsigma/dpsi_pim Stat. error deg mcb/rad mcb/rad 30 0.327883 0.0600073 90 0.362387 0.054722 150 0.474033 0.0672858 210 0.423999 0.0653301 270 0.39618 0.0591694 330 0.330679 0.0620863