CLAS physics database search results Measurement E159M316 E1-6 V. Burkert 2001 psi(pi+) dsigma/dpsi_pip Data errors deg mcb/rad mcb/rad 30 0.706152 0.0943057 90 0.650877 0.0888125 150 0.961323 0.125146 210 1.02794 0.135917 270 0.728484 0.0992366 330 0.636614 0.0842061