CLAS physics database search results Measurement E159M434 E1-6 V. Burkert 2001 psi(p) dsigma/dpsi_pr Data errors deg mcb/rad mcb/rad 30 0.626896 0.0999055 90 0.601391 0.0942696 150 0.75029 0.117313 210 0.720936 0.113396 270 0.605177 0.0940981 330 0.652619 0.103234