CLAS physics database search results Measurement E151M662 EG4 Xiaochao Zheng 2016 cos(theta_pi+) phi(pi+) A_UL Stat. error Syst. error degrees 0.65 114 -0.814 0.6361 0.0581 0.65 234 0.1812 0.8322 0.032 0.65 294 -0.7858 0.6004 0.0567 0.75 114 0.9839 0.837 0.0672 0.75 222 0.9976 0.6727 0.068 0.75 234 2.2232 0.7724 0.1392 0.75 246 1.6864 0.816 0.1074 0.85 102 -0.8538 0.6521 0.0602 0.85 114 -1.2396 0.6531 0.0815 0.85 222 0.574 0.6674 0.0462 0.85 234 -0.1511 0.7132 0.0314 0.85 246 0.7186 0.8096 0.0532 0.95 222 -0.1316 0.6139 0.0311 0.95 246 -0.2825 0.5318 0.0346 0.95 258 -0.572 0.5259 0.0461