CLAS physics database search results Measurement E151M320 EG4 Xiaochao Zheng 2016 cos(theta_pi+) phi(pi+) A_UL Data errors Systematic errors degrees 0.55 234 0.2169 0.6422 0.0329 0.55 246 -0.0273 0.4912 0.0302 0.55 258 -0.8705 0.4563 0.0752 0.65 126 -0.7462 0.4772 0.0553 0.65 138 -0.257 0.4862 0.034 0.65 222 -0.4967 0.5383 0.0493 0.65 234 -0.1336 0.4659 0.0334 0.65 246 0.5924 0.3678 0.0472 0.65 258 0.0195 0.3781 0.0337 0.65 270 -0.4241 0.4017 0.0458 0.75 114 -1.1612 0.4322 0.0944 0.75 126 0.4931 0.4017 0.0524 0.75 138 -0.4193 0.4242 0.0455 0.75 150 0.1801 0.4778 0.033 0.75 162 -1.0333 0.6828 0.0691 0.75 210 0.372 0.6033 0.0378 0.75 222 -0.2101 0.442 0.0422 0.75 234 0.1753 0.4177 0.0348 0.75 246 0.2045 0.3507 0.0357 0.75 258 -0.2618 0.3031 0.0357 0.75 270 0.7807 0.515 0.0567 0.85 102 0.2617 0.6236 0.0341 0.85 114 -0.3357 0.6367 0.0365 0.85 126 -0.6581 0.3681 0.0503 0.85 138 -0.6439 0.4927 0.0608 0.85 150 -0.8172 0.3784 0.0602 0.85 162 0.0262 0.5574 0.03 0.85 222 0.1544 0.7908 0.0314 0.85 234 -0.3176 0.3682 0.0412 0.85 246 0.3011 0.341 0.0353 0.85 258 0.3233 0.3623 0.0413 0.85 270 0.0802 0.3307 0.0352 0.95 102 -0.0083 0.7547 0.03 0.95 114 1.2775 0.9412 0.0826 0.95 234 -0.7312 0.4957 0.0533 0.95 246 0.7476 0.7474 0.0541 0.95 258 0.7109 0.7425 0.0523 0.95 270 -0.5013 0.5562 0.0426 0.95 282 -0.3408 0.5663 0.0363 0.85 282 -0.395 0.5361 0.0387 0.95 90 0.3127 0.5939 0.0357 0.95 102 -0.1375 0.4343 0.0312 0.95 114 -0.9592 0.4049 0.0665 0.95 126 -0.7048 0.4811 0.053 0.95 138 -0.0263 0.5786 0.03 0.95 234 0.5666 0.4487 0.0462 0.95 246 0.556 0.4464 0.0457 0.95 258 -0.086 0.4006 0.0305 0.95 270 -0.2794 0.4214 0.0346