CLAS physics database search results Measurement E151M1020 EG4 Xiaochao Zheng 2016 cos(theta_pi+) phi(pi+) A_UL Stat. error Syst. error degrees 0.45 90 -0.1125 0.8095 0.0311 0.55 78 0.334 0.7704 0.0387 0.55 90 -0.7181 0.5918 0.0605 0.55 102 0.1482 0.8044 0.0319 0.65 78 -0.4914 0.5858 0.0468 0.65 90 0.0586 0.6429 0.0303 0.65 102 1.9622 0.8707 0.1465 0.65 114 0.6704 0.7723 0.0575 0.65 258 -1.5603 0.5002 0.1179 0.65 270 1.1453 0.8734 0.0889 0.75 54 0.6049 0.6844 0.0534 0.75 78 0.686 0.6367 0.0584 0.75 90 -0.1345 0.6801 0.0316 0.75 102 0.5141 0.7727 0.0481 0.75 114 0.9361 0.9558 0.0747 0.75 126 2.103 0.9898 0.1566 0.75 234 0.904 0.7749 0.0726 0.75 246 0.3374 0.6939 0.0388 0.75 258 1.4353 0.6971 0.1091 0.75 270 -0.078 0.5741 0.0305 0.75 282 1.5462 0.7138 0.1169 0.75 294 1.1687 0.7666 0.0905 0.75 306 -1.1813 0.4854 0.0914 0.85 42 0.1937 0.7825 0.0332 0.85 90 0.9219 0.6561 0.0738 0.85 102 0.8614 0.6406 0.0697 0.85 210 -0.8504 0.634 0.069 0.85 222 0.3318 0.7276 0.0386 0.85 234 1.4203 0.933 0.1081 0.85 246 -0.1807 0.7085 0.0328 0.85 258 -0.8738 0.4905 0.0706 0.85 270 0.2529 0.5733 0.0352 0.85 282 0.0628 0.6079 0.0303 0.85 294 -0.4939 0.6176 0.0469 0.85 306 -0.4677 0.5121 0.0455 0.85 318 -0.2206 0.5321 0.0341 0.85 330 0.0768 0.5799 0.0305 0.95 102 0.3336 0.7911 0.0387 0.95 210 -0.2223 0.7259 0.0341 0.95 234 -0.8375 0.5922 0.0682 0.95 246 0.1817 0.6351 0.0328 0.95 258 -0.9295 0.4482 0.0743 0.95 270 -0.0647 0.6858 0.0304 0.95 282 -0.0184 0.6029 0.03 0.95 294 -0.1363 0.6002 0.0316 0.95 306 0.2367 0.5993 0.0346 0.95 318 0.6344 0.6084 0.0552 0.95 330 -1.2998 0.432 0.0996