CLAS physics database search results Measurement E151M475 EG4 Xiaochao Zheng 2016 cos(theta_pi+) phi(pi+) A_UL Data errors Systematic errors degrees 0.35 66 -0.4539 0.4454 0.0409 0.35 78 -0.2033 0.5014 0.0325 0.45 66 0.9662 0.5229 0.0663 0.45 78 0.1816 0.3835 0.032 0.55 78 -0.1381 0.3479 0.0312 0.55 90 0.6798 0.3799 0.0513 0.55 270 0.6685 0.5452 0.0507 0.65 90 -0.2713 0.3745 0.0343 0.65 258 -0.2187 0.3252 0.0328 0.65 270 0.1734 0.3627 0.0318 0.75 102 0.53 0.6536 0.0442 0.75 114 0.6122 0.4949 0.048 0.75 126 1.3366 0.4772 0.0871 0.75 234 -0.0177 0.491 0.03 0.75 246 0.3034 0.4394 0.0353 0.75 258 -0.3662 0.2914 0.0374 0.75 270 -0.7866 0.3453 0.0567 0.85 102 0.4184 0.5935 0.0394 0.85 114 0.1383 0.4165 0.0312 0.85 126 -0.2702 0.3175 0.0343 0.85 138 0.1514 0.3748 0.0314 0.85 150 0.7893 0.3764 0.0568 0.85 162 0.4867 0.4943 0.0423 0.85 174 0.3414 0.4737 0.0366 0.85 186 0.658 0.5041 0.0502 0.85 198 -0.8358 0.4345 0.0593 0.85 210 0.5282 0.5627 0.0441 0.85 222 -0.1805 0.4648 0.032 0.85 234 -0.3993 0.4002 0.0387 0.85 246 -0.5028 0.3437 0.043 0.85 258 -0.0694 0.4322 0.0303 0.95 114 -0.015 0.4916 0.03 0.95 126 0.1505 0.405 0.0314 0.95 138 -0.7682 0.3037 0.0557 0.95 150 -0.3253 0.3179 0.036 0.95 162 -0.3416 0.3594 0.0366 0.95 174 0.9644 0.4284 0.0662 0.95 186 0.0537 0.4533 0.0302 0.95 198 -0.5814 0.4123 0.0465 0.95 210 -0.3895 0.3738 0.0383