CLAS physics database search results Measurement E151M266 EG4 Xiaochao Zheng 2016 cos(theta_pi+) phi(pi+) A_UL Data errors Systematic errors degrees 0.55 258 -0.6385 0.3431 0.0495 0.55 270 -0.8032 0.3371 0.0585 0.55 282 0.2716 0.4654 0.0344 0.65 246 -0.1458 0.3613 0.0391 0.65 258 -0.1843 0.329 0.0429 0.65 270 0.394 0.3519 0.0388 0.65 282 -0.6103 0.3277 0.0479 0.75 102 -0.6614 0.4647 0.0653 0.75 114 -0.5467 0.4458 0.0451 0.75 126 -0.2253 0.345 0.0374 0.75 138 1.9648 1.0882 0.1221 0.75 234 -0.9741 0.4385 0.0674 0.75 246 0.0859 0.3432 0.0453 0.75 258 -0.2653 0.2814 0.0465 0.75 270 0.4413 0.3407 0.0414 0.75 282 -0.3311 0.2938 0.0401 0.75 294 -0.0583 0.4114 0.0345 0.85 90 0.8158 0.5409 0.0587 0.85 102 -0.3993 0.3413 0.041 0.85 114 0.2036 0.3381 0.0327 0.85 126 -0.2829 0.3261 0.0354 0.85 138 -0.527 0.3292 0.0446 0.85 150 -0.3189 0.6594 0.0356 0.85 162 0.3618 0.4035 0.0506 0.85 174 -0.8394 0.4987 0.0724 0.85 234 0.3808 0.4364 0.0429 0.85 246 -0.4399 0.3866 0.0405 0.85 258 -0.1078 0.3358 0.035 0.85 270 -0.103 0.3259 0.0334 0.85 282 -0.258 0.2806 0.0347 0.85 294 0.1425 0.3266 0.0313 0.95 66 -0.2307 0.4714 0.0332 0.95 78 0.4828 0.5227 0.0424 0.95 114 -0.1849 0.3369 0.0353 0.95 126 -0.1578 0.3966 0.0328 0.95 138 0.3195 0.4113 0.0373 0.95 150 1.0131 0.3779 0.0696 0.95 162 -0.6098 0.328 0.0478 0.95 174 -0.5152 0.3085 0.0531 0.95 186 0.0551 0.4736 0.0302 0.95 246 0.189 0.6989 0.0321 0.95 258 -0.1527 0.5811 0.0314 0.95 270 -0.5846 0.4673 0.0463 0.95 294 -0.5711 0.4239 0.0464