CLAS physics database search results Measurement E151M1153 EG4 Xiaochao Zheng 2016 cos(theta_pi+) phi(pi+) A_UL Stat. error Syst. error degrees 0.55 102 -0.5641 0.8578 0.051 0.55 114 0.3179 0.9774 0.0379 0.55 126 -0.5842 0.8865 0.0522 0.65 114 -0.0729 0.9198 0.0305 0.65 126 -1.0058 0.7513 0.0794 0.65 210 0.4798 0.8469 0.0462 0.65 222 1.0786 1.0427 0.0843 0.65 294 0.6321 0.872 0.0551 0.75 78 -0.0183 0.9388 0.03 0.75 90 0.2495 0.9288 0.0351 0.75 126 -0.4419 0.8568 0.0441 0.75 138 -0.1199 0.9525 0.0313 0.75 198 1.0685 0.9155 0.0837 0.75 210 -0.5838 0.6811 0.0522 0.75 222 0.3475 0.7949 0.0393 0.75 234 2.2078 0.8642 0.1641 0.75 246 -0.0011 0.7619 0.03 0.75 282 -0.7503 0.7057 0.0625 0.85 78 -0.4112 0.701 0.0425 0.85 90 -0.4405 0.6251 0.044 0.85 102 -0.9628 0.5917 0.0765 0.85 114 1.0273 0.9727 0.0809 0.85 174 0.2984 0.864 0.0371 0.85 186 0.4223 0.7324 0.043 0.85 198 0.958 0.7279 0.0762 0.85 210 0.8117 0.772 0.0665 0.85 222 1.5128 0.7403 0.1146 0.85 234 0.6004 0.6772 0.0532 0.85 246 0.3075 0.8746 0.0375 0.95 174 0.7228 0.9458 0.0608 0.95 186 0.571 0.8889 0.0514 0.95 198 -0.0496 0.6638 0.0302 0.95 210 -0.1167 0.5872 0.0312 0.95 222 0.2112 0.6382 0.0337 0.95 234 -0.1882 0.7506 0.033 0.95 246 -0.0868 0.6694 0.0307 0.95 258 -0.7092 0.6644 0.0599