Measurement E151M3251
| Experiment: | EG4 | |
|---|---|---|
| Year: | 2016 | |
| Spokesperson: | Xiaochao Zheng | |
| Reaction: | ep → π+n | |
| Polarization: | beam (longitudinal), target (longitudinal) | |
| Quantity: | ALU | |
| εL: | 0.2216 | |
| Q2: | 0.101 GeV2 | |
| W: | 1415.0 GeV | |
| Ebeam: | 2.2596 GeV | |
| ε: | 0.9321 | |
| cos(θπ+) | φ(π+), [deg] | ALU | uncertainty |
|---|---|---|---|
| 0.25 | 66.0 | -0.2387 | 0.159 |
| 0.35 | 66.0 | 0.1312 | 0.1789 |
| 0.35 | 78.0 | -0.1035 | 0.2265 |
| 0.35 | 282.0 | -0.038 | 0.2276 |
| 0.35 | 294.0 | -0.0118 | 0.1789 |
| 0.35 | 306.0 | 0.1328 | 0.2455 |
| 0.45 | 66.0 | -0.0515 | 0.2462 |
| 0.45 | 78.0 | 0.0085 | 0.1792 |
| 0.45 | 282.0 | 0.2515 | 0.1778 |
| 0.45 | 294.0 | 0.0653 | 0.1774 |
| 0.55 | 78.0 | -0.0946 | 0.2058 |
| 0.55 | 90.0 | -0.2641 | 0.246 |
| 0.55 | 102.0 | -0.1102 | 0.2624 |
| 0.55 | 114.0 | 0.0481 | 0.2701 |
| 0.55 | 270.0 | -0.4946 | 0.1715 |
| 0.55 | 282.0 | -0.0892 | 0.2325 |
| 0.55 | 294.0 | -0.4855 | 0.2322 |
| 0.55 | 306.0 | -0.1521 | 0.2612 |
| 0.65 | 90.0 | 0.0503 | 0.2643 |
| 0.65 | 102.0 | 0.1501 | 0.1733 |
| 0.65 | 114.0 | 0.1374 | 0.1816 |
| 0.65 | 126.0 | -0.0287 | 0.2139 |
| 0.65 | 138.0 | 0.4438 | 0.2265 |
| 0.65 | 234.0 | -0.2952 | 0.1851 |
| 0.65 | 246.0 | 0.2519 | 0.2054 |
| 0.65 | 258.0 | 0.2099 | 0.2067 |
| 0.75 | 90.0 | 0.0248 | 0.252 |
| 0.75 | 102.0 | -0.207 | 0.214 |
| 0.75 | 114.0 | -0.0038 | 0.1819 |
| 0.75 | 126.0 | -0.097 | 0.1861 |
| 0.75 | 138.0 | -0.1046 | 0.1761 |
| 0.75 | 222.0 | -0.0625 | 0.2097 |
| 0.75 | 234.0 | -0.2081 | 0.1753 |
| 0.75 | 246.0 | -0.0356 | 0.1692 |
| 0.75 | 258.0 | 0.0335 | 0.1817 |
| 0.75 | 270.0 | -0.2106 | 0.2181 |
| 0.85 | 78.0 | -0.3718 | 0.2399 |
| 0.85 | 90.0 | -0.1557 | 0.2507 |
| 0.85 | 102.0 | -0.0926 | 0.2154 |
| 0.85 | 114.0 | 0.1607 | 0.1871 |
| 0.85 | 126.0 | 0.211 | 0.1682 |
| 0.85 | 138.0 | -0.1562 | 0.1681 |
| 0.85 | 150.0 | 0.0831 | 0.2545 |
| 0.85 | 210.0 | 0.266 | 0.2469 |
| 0.85 | 234.0 | -0.055 | 0.1893 |
| 0.85 | 246.0 | -0.0748 | 0.1623 |
| 0.85 | 258.0 | 0.0749 | 0.1708 |
| 0.85 | 270.0 | -0.3843 | 0.1682 |
| 0.85 | 282.0 | -0.1313 | 0.2413 |
| 0.95 | 234.0 | 0.0194 | 0.2441 |
| 0.95 | 246.0 | -0.264 | 0.188 |
| 0.95 | 258.0 | 0.154 | 0.1842 |
| 0.95 | 270.0 | -0.045 | 0.2449 |
| 0.25 | 294.0 | 0.0912 | 0.2196 |
| 0.35 | 66.0 | 0.0485 | 0.1764 |
| 0.35 | 78.0 | 0.0368 | 0.2075 |
| 0.35 | 282.0 | 0.2115 | 0.1831 |
| 0.35 | 294.0 | -0.1074 | 0.177 |
| 0.35 | 306.0 | 0.0438 | 0.233 |
| 0.45 | 66.0 | -0.4764 | 0.2001 |
| 0.45 | 78.0 | -0.1025 | 0.1824 |
| 0.45 | 282.0 | 0.0527 | 0.2074 |
| 0.45 | 294.0 | -0.2317 | 0.1831 |
| 0.55 | 66.0 | 0.037 | 0.2285 |
| 0.55 | 78.0 | 0.2718 | 0.227 |
| 0.55 | 114.0 | -0.0187 | 0.234 |
| 0.55 | 270.0 | -0.3402 | 0.1882 |
| 0.55 | 282.0 | 0.0923 | 0.178 |
| 0.55 | 294.0 | -0.0902 | 0.2333 |
| 0.65 | 66.0 | -0.0192 | 0.2638 |
| 0.65 | 102.0 | 0.0736 | 0.2066 |
| 0.65 | 114.0 | 0.0602 | 0.1687 |
| 0.65 | 126.0 | 0.2037 | 0.1822 |
| 0.65 | 138.0 | 0.1096 | 0.2328 |
| 0.65 | 234.0 | -0.2382 | 0.1786 |
| 0.65 | 246.0 | -0.0111 | 0.2239 |
| 0.65 | 258.0 | 0.353 | 0.21 |
| 0.65 | 270.0 | 0.281 | 0.1907 |
| 0.65 | 282.0 | -0.305 | 0.2348 |
| 0.75 | 90.0 | 0.0431 | 0.259 |
| 0.75 | 102.0 | -0.0554 | 0.1686 |
| 0.75 | 114.0 | 0.2224 | 0.1503 |
| 0.75 | 126.0 | 0.1812 | 0.1691 |
| 0.75 | 138.0 | 0.0224 | 0.2208 |
| 0.75 | 150.0 | -0.3354 | 0.226 |
| 0.75 | 210.0 | -0.0301 | 0.262 |
| 0.75 | 222.0 | 0.114 | 0.2046 |
| 0.75 | 234.0 | -0.1811 | 0.1467 |
| 0.75 | 246.0 | 0.0686 | 0.1587 |
| 0.75 | 258.0 | 0.0329 | 0.175 |
| 0.75 | 270.0 | -0.201 | 0.2198 |
| 0.85 | 78.0 | 0.0541 | 0.2113 |
| 0.85 | 102.0 | -0.153 | 0.2204 |
| 0.85 | 114.0 | 0.1239 | 0.198 |
| 0.85 | 126.0 | 0.1244 | 0.167 |
| 0.85 | 138.0 | -0.0247 | 0.2298 |
| 0.85 | 222.0 | 0.0876 | 0.1996 |
| 0.85 | 234.0 | -0.2658 | 0.1626 |
| 0.85 | 246.0 | 0.1429 | 0.1591 |
| 0.85 | 258.0 | 0.0516 | 0.1713 |
| 0.85 | 270.0 | -0.4146 | 0.1653 |
| 0.85 | 282.0 | 0.0825 | 0.2511 |
| 0.95 | 90.0 | -0.1793 | 0.2341 |
| 0.95 | 222.0 | -0.2924 | 0.2506 |
| 0.95 | 234.0 | 0.0084 | 0.2359 |
| 0.95 | 246.0 | -0.0415 | 0.1831 |
| 0.95 | 258.0 | -0.3126 | 0.1862 |
| 0.95 | 270.0 | 0.0062 | 0.1836 |
Experiment comment: