CLAS physics database search results Measurement E159M118 E1-6 V. Burkert 2001 psi(pi+) dsigma/dpsi_pip Data errors deg mcb/rad mcb/rad 30 1.3236 0.17739 90 1.27675 0.177556 150 1.492 0.202388 210 1.66906 0.225038 270 1.33632 0.188623 330 1.38837 0.191085