CLAS physics database search results Measurement E151M301 EG4 Xiaochao Zheng 2016 cos(theta_pi+) phi(pi+) A_UL Data errors Systematic errors degrees 0.55 258 0.2017 0.4991 0.0328 0.55 270 -0.1709 0.4329 0.0325 0.65 114 1.0369 0.6352 0.0709 0.65 126 -0.0729 0.4593 0.0596 0.65 138 -0.6854 0.4518 0.0578 0.65 234 -0.5944 0.4271 0.0559 0.65 246 -0.4247 0.3745 0.0404 0.65 258 -0.1647 0.376 0.0327 0.65 270 0.3334 0.4438 0.0466 0.75 114 -0.0161 0.4751 0.0312 0.75 126 -0.1836 0.3605 0.0322 0.75 138 0.8264 0.4059 0.0593 0.75 150 -0.5109 0.5473 0.0436 0.75 162 -0.27 0.6137 0.0343 0.75 222 0.5541 0.4492 0.0454 0.75 234 -0.3702 0.3379 0.038 0.75 246 -0.4261 0.318 0.0398 0.75 258 0.0372 0.3742 0.0372 0.75 270 -0.9167 0.286 0.0634 0.75 282 0.6853 0.5094 0.0523 0.85 114 -0.9056 0.3473 0.063 0.85 126 -0.5257 0.3363 0.0441 0.85 138 0.3711 0.3933 0.0408 0.85 150 0.1727 0.408 0.032 0.85 162 0.4162 0.5763 0.0395 0.85 174 -0.7525 0.6572 0.0543 0.85 222 0.0485 0.4584 0.0338 0.85 234 0.002 0.3742 0.0301 0.85 246 0.2588 0.3499 0.041 0.85 258 -0.302 0.3381 0.0491 0.85 270 -0.1489 0.3415 0.0343 0.85 282 -0.0468 0.3492 0.0442 0.95 78 -0.1513 0.5577 0.0314 0.95 90 0.2677 0.3729 0.0351 0.95 102 -0.0114 0.4035 0.0354 0.95 114 0.282 0.4438 0.0382 0.95 138 0.1538 0.731 0.0314 0.95 222 -0.1121 0.5232 0.0308 0.95 234 1.0268 0.4393 0.0701 0.95 246 -0.3112 0.2951 0.0363 0.95 258 -0.305 0.3727 0.0581 0.95 270 -0.2738 0.3066 0.0345 0.95 282 0.0065 0.3779 0.0308