CLAS physics database search results Measurement E151M207 EG4 Xiaochao Zheng 2016 cos(theta_pi+) phi(pi+) A_UL Data errors Systematic errors degrees 0.55 270 0.1199 0.3635 0.0329 0.55 282 0.2696 0.2829 0.0402 0.65 258 -0.7354 0.3668 0.0535 0.65 270 0.2861 0.3146 0.0369 0.65 282 0.103 0.3265 0.0462 0.75 258 -0.1429 0.3603 0.0439 0.75 270 0.0768 0.3235 0.0471 0.85 126 -0.3536 0.5926 0.0368 0.85 138 -0.0248 0.6142 0.03 0.85 150 0.3627 0.8485 0.0371 0.85 162 0.141 0.6996 0.0312 0.85 186 -0.0523 0.6752 0.0302 0.85 270 -0.5519 0.4362 0.0448 0.95 126 0.4953 0.7448 0.0423 0.95 138 0.7324 0.6974 0.0533 0.95 150 -0.3623 0.4506 0.0371 0.95 162 1.0718 0.8413 0.0712 0.95 174 -0.2869 0.4446 0.0346 0.95 186 1.0705 0.8095 0.0711 0.95 210 -0.1737 0.4875 0.0318 0.75 282 1.1305 0.4235 0.0762 0.85 126 -0.0345 0.4458 0.0301 0.85 138 0.1871 0.4729 0.0322 0.85 150 -0.2338 0.4296 0.0333 0.85 162 0.7607 0.4366 0.0558 0.85 186 -0.8055 0.4023 0.0582 0.85 258 0.1721 0.4102 0.0318 0.95 126 -0.1252 0.3783 0.031 0.95 138 -0.1222 0.354 0.0309 0.95 162 0.1472 0.352 0.0314 0.95 174 0.0367 0.3743 0.0301 0.95 186 -0.1173 0.3898 0.0309 0.95 198 0.1604 0.3874 0.0316