CLAS physics database search results Measurement E151M326 EG4 Xiaochao Zheng 2016 cos(theta_pi+) phi(pi+) A_UL Data errors Systematic errors degrees 0.65 234 -0.1284 0.6796 0.031 0.65 246 -0.0583 0.8523 0.0302 0.65 258 0.5242 0.5493 0.0441 0.75 114 0.1277 1.1055 0.031 0.75 126 -0.1839 0.9347 0.032 0.75 234 -1.5136 0.4198 0.096 0.75 246 -1.0407 0.5469 0.0695 0.75 258 0.6924 0.9464 0.0514 0.85 114 0.0129 1.0548 0.03 0.85 138 0.0246 1.0556 0.03 0.85 246 -0.5667 0.7632 0.0454 0.85 258 -0.8304 0.646 0.0583 0.85 270 0.4247 0.9211 0.0394 0.85 282 -0.8851 0.6343 0.0612 0.85 294 -0.3967 0.7653 0.0384 0.95 66 0.4964 1.0938 0.0423 0.95 270 -0.3119 0.6787 0.0354 0.95 282 -0.8045 0.5414 0.057 0.95 294 -0.4277 0.5993 0.0395 0.65 270 -0.3756 0.6393 0.038 0.75 114 0.1209 0.7061 0.0309 0.75 126 1.7098 0.6919 0.11 0.75 234 -0.7387 0.5916 0.0547 0.75 246 -0.4539 0.5821 0.0411 0.75 258 0.3309 0.6316 0.0363 0.75 270 0.3743 0.6417 0.0379 0.75 282 -0.2615 0.7008 0.0341 0.85 114 1.0243 0.6751 0.0702 0.85 126 -1.8155 0.5143 0.1163 0.85 150 0.3446 0.6729 0.0368 0.85 234 0.3312 0.6345 0.0363 0.85 258 0.5887 0.6025 0.0472 0.85 270 -0.6567 0.5472 0.0505 0.85 282 -0.9332 0.5192 0.0651 0.85 294 0.7886 0.6374 0.0573 0.95 90 -0.1489 0.6068 0.0314 0.95 282 -0.7066 0.4555 0.053 0.95 294 -0.3749 0.5449 0.0379