CLAS physics database search results Measurement E151M2231 EG4 Xiaochao Zheng 2016 cos(theta_pi+) phi(pi+) A_LL Stat. error Syst. error degrees 0.45 90 1.6049 0.9183 0.1202 0.55 78 -0.2524 0.7151 0.0351 0.55 90 1.2528 0.8377 0.0957 0.55 102 1.8319 0.7545 0.1362 0.55 270 1.5768 0.8905 0.1182 0.65 66 1.1073 0.8016 0.0857 0.65 78 -0.5253 0.6908 0.0485 0.65 90 0.403 0.7311 0.0419 0.65 102 -0.7912 0.7307 0.0647 0.65 258 -0.5977 0.8864 0.0527 0.65 270 -0.6615 0.873 0.0566 0.65 282 -0.2214 0.7534 0.034 0.65 294 1.1531 0.7568 0.0888 0.75 66 0.2878 0.8212 0.0365 0.75 78 0.6165 0.7162 0.0538 0.75 90 0.023 0.6494 0.03 0.75 102 -0.1538 0.8196 0.032 0.75 114 -1.0065 0.8558 0.0789 0.75 234 -1.653 0.7574 0.1236 0.75 246 0.9011 0.6733 0.0719 0.75 258 0.4181 0.6868 0.0427 0.75 270 -0.6735 0.6446 0.0573 0.75 282 1.023 0.7691 0.08 0.75 294 -0.4638 0.8285 0.0451 0.75 306 -0.943 0.7667 0.0747 0.85 42 1.2948 0.7173 0.0986 0.85 78 0.0112 0.705 0.03 0.85 90 -0.6596 0.7986 0.0565 0.85 102 0.8083 0.864 0.0658 0.85 126 0.5981 0.9614 0.0527 0.85 222 0.3991 0.7352 0.0417 0.85 234 0.4248 0.777 0.043 0.85 246 -0.8706 0.7843 0.0699 0.85 258 0.2934 0.7306 0.0368 0.85 270 -0.2657 0.59 0.0357 0.85 282 0.5252 0.6767 0.0485 0.85 294 0.2828 0.6161 0.0363 0.85 306 -0.2966 0.5925 0.0369 0.85 318 -1.3506 0.627 0.1024 0.85 330 0.3023 0.7115 0.0372 0.95 90 -0.595 0.8045 0.0525 0.95 222 0.9324 0.8504 0.074 0.95 234 -0.4224 0.7216 0.0429 0.95 246 -0.5679 0.7882 0.0509 0.95 258 -0.1313 0.8199 0.0315 0.95 270 -0.0149 0.7387 0.03 0.95 282 -0.0244 0.7729 0.0301 0.95 294 0.1812 0.7155 0.0328 0.95 306 1.0006 0.6226 0.0785 0.95 318 0.3363 0.683 0.0387 0.95 330 -0.2398 0.6923 0.0347