CLAS physics database search results Measurement E151M482 EG4 Xiaochao Zheng 2016 cos(theta_pi+) phi(pi+) A_UL Data errors Systematic errors degrees 0.25 66 0.4472 0.6202 0.0406 0.35 66 0.1357 0.446 0.0311 0.35 78 0.5511 0.6096 0.0451 0.45 66 -0.2406 0.5378 0.0334 0.45 78 -0.0884 0.5537 0.0305 0.45 282 -0.4178 0.4478 0.0394 0.45 294 0.1002 0.5651 0.0306 0.55 270 0.1617 0.5568 0.0316 0.55 282 -0.1506 0.5361 0.0314 0.55 294 -0.0118 0.5329 0.03 0.65 270 0.305 0.5048 0.0353 0.65 282 0.4382 0.4623 0.0402 0.65 294 1.6454 1.6454 0.105 0.75 90 0.2825 0.6211 0.0346 0.75 102 -0.44 0.4913 0.0403 0.75 258 -0.6798 0.4383 0.0513 0.75 270 0.688 0.4868 0.0517 0.75 282 0.2057 0.4435 0.0325 0.75 294 0.0082 0.5197 0.03 0.85 78 -0.3202 0.4057 0.0358 0.85 90 -0.4414 0.4119 0.0404 0.85 102 1.716 1.716 0.1092 0.85 114 -0.1867 0.4185 0.0321 0.85 258 -0.1756 0.4596 0.0319 0.85 270 0.5754 0.4939 0.0462 0.85 282 -0.0545 0.4828 0.0302 0.95 66 -0.0634 0.4144 0.0302 0.95 78 -0.1347 0.4814 0.0311 0.95 90 -0.3609 0.378 0.0372 0.95 102 -0.2607 0.377 0.034 0.95 114 -0.3411 0.3927 0.0365 0.95 126 -0.9646 0.3595 0.0662 0.95 138 -0.4519 0.4416 0.0408