Measurement E151M3289
| Experiment: | EG4 | |
|---|---|---|
| Year: | 2016 | |
| Spokesperson: | Xiaochao Zheng | |
| Reaction: | ep → π+n | |
| Polarization: | beam (longitudinal), target (longitudinal) | |
| Quantity: | ALU | |
| εL: | 0.0776 | |
| Q2: | 0.0496 GeV2 | |
| W: | 1505.0 GeV | |
| Ebeam: | 2.2596 GeV | |
| ε: | 0.914 | |
| cos(θπ+) | φ(π+), [deg] | ALU | uncertainty |
|---|---|---|---|
| 0.25 | 66.0 | -0.0924 | 0.2405 |
| 0.25 | 78.0 | -0.0674 | 0.1651 |
| 0.35 | 54.0 | -0.1598 | 0.2292 |
| 0.35 | 66.0 | -0.2088 | 0.1812 |
| 0.35 | 78.0 | -0.0138 | 0.1629 |
| 0.35 | 90.0 | 0.0411 | 0.215 |
| 0.35 | 270.0 | 0.0171 | 0.2019 |
| 0.35 | 282.0 | -0.0165 | 0.1839 |
| 0.35 | 294.0 | -0.3047 | 0.2086 |
| 0.45 | 66.0 | -0.0448 | 0.1759 |
| 0.45 | 78.0 | -0.1981 | 0.1658 |
| 0.45 | 90.0 | -0.0639 | 0.2153 |
| 0.45 | 114.0 | 0.4286 | 0.2368 |
| 0.45 | 258.0 | 0.1207 | 0.2228 |
| 0.45 | 270.0 | -0.0998 | 0.1758 |
| 0.45 | 282.0 | 0.0783 | 0.1709 |
| 0.45 | 294.0 | 0.1587 | 0.2009 |
| 0.55 | 78.0 | 0.2587 | 0.1881 |
| 0.55 | 102.0 | -0.0527 | 0.2702 |
| 0.55 | 114.0 | 0.0055 | 0.184 |
| 0.55 | 126.0 | -0.2375 | 0.1824 |
| 0.55 | 138.0 | -0.2873 | 0.1974 |
| 0.55 | 222.0 | 0.3409 | 0.2242 |
| 0.55 | 246.0 | 0.2098 | 0.2392 |
| 0.55 | 258.0 | -0.1683 | 0.2531 |
| 0.55 | 270.0 | -0.2366 | 0.1753 |
| 0.55 | 282.0 | -0.1215 | 0.1618 |
| 0.55 | 294.0 | 0.0054 | 0.2152 |
| 0.65 | 66.0 | 0.0432 | 0.2179 |
| 0.65 | 78.0 | -0.0261 | 0.2318 |
| 0.65 | 102.0 | -0.3457 | 0.2178 |
| 0.65 | 114.0 | 0.351 | 0.1718 |
| 0.65 | 126.0 | 0.0683 | 0.1624 |
| 0.65 | 138.0 | 0.353 | 0.1896 |
| 0.65 | 150.0 | 0.127 | 0.218 |
| 0.65 | 198.0 | -0.0089 | 0.2174 |
| 0.65 | 210.0 | -0.2327 | 0.2076 |
| 0.65 | 222.0 | -0.1463 | 0.164 |
| 0.65 | 234.0 | 0.0408 | 0.2246 |
| 0.65 | 246.0 | -0.2756 | 0.2122 |
| 0.65 | 258.0 | -0.0075 | 0.2414 |
| 0.65 | 270.0 | 0.0889 | 0.217 |
| 0.65 | 282.0 | -0.0301 | 0.2483 |
| 0.65 | 294.0 | 0.1234 | 0.2179 |
| 0.75 | 66.0 | 0.3683 | 0.2533 |
| 0.75 | 102.0 | -0.149 | 0.2443 |
| 0.75 | 114.0 | -0.0867 | 0.1855 |
| 0.75 | 126.0 | 0.1234 | 0.1699 |
| 0.75 | 138.0 | 0.014 | 0.2086 |
| 0.75 | 150.0 | 0.0207 | 0.2026 |
| 0.75 | 210.0 | -0.2823 | 0.2042 |
| 0.75 | 222.0 | -0.0006 | 0.2063 |
| 0.75 | 234.0 | 0.0784 | 0.1981 |
| 0.75 | 246.0 | -0.0113 | 0.2099 |
| 0.75 | 282.0 | -0.0142 | 0.1668 |
| 0.75 | 294.0 | 0.0233 | 0.2154 |
| 0.85 | 90.0 | -0.203 | 0.2457 |
| 0.85 | 102.0 | -0.0355 | 0.2166 |
| 0.85 | 114.0 | 0.2643 | 0.221 |
| 0.85 | 198.0 | -0.0541 | 0.2213 |
| 0.85 | 210.0 | -0.044 | 0.2469 |
| 0.85 | 222.0 | 0.1724 | 0.2142 |
| 0.85 | 234.0 | 0.1449 | 0.1778 |
| 0.85 | 246.0 | 0.1245 | 0.2096 |
| 0.85 | 258.0 | 0.374 | 0.2255 |
| 0.95 | 234.0 | -0.3294 | 0.223 |
| 0.25 | 282.0 | 0.2182 | 0.2528 |
| 0.25 | 294.0 | 0.0157 | 0.2656 |
| 0.35 | 66.0 | -0.2419 | 0.1854 |
| 0.35 | 78.0 | 0.1126 | 0.186 |
| 0.35 | 90.0 | 0.4511 | 0.2325 |
| 0.35 | 270.0 | -0.2855 | 0.2121 |
| 0.35 | 282.0 | -0.0642 | 0.1691 |
| 0.35 | 294.0 | 0.0231 | 0.2043 |
| 0.45 | 66.0 | 0.1274 | 0.2052 |
| 0.45 | 78.0 | 0.1631 | 0.1746 |
| 0.45 | 90.0 | -0.0694 | 0.1851 |
| 0.45 | 102.0 | 0.073 | 0.2479 |
| 0.45 | 114.0 | -0.2281 | 0.1921 |
| 0.45 | 258.0 | -0.4537 | 0.2318 |
| 0.45 | 270.0 | 0.2097 | 0.1698 |
| 0.45 | 282.0 | 0.299 | 0.1324 |
| 0.45 | 294.0 | -0.1651 | 0.2228 |
| 0.55 | 66.0 | 0.1233 | 0.2491 |
| 0.55 | 78.0 | -0.1224 | 0.1776 |
| 0.55 | 90.0 | -0.2651 | 0.1899 |
| 0.55 | 114.0 | 0.0361 | 0.1964 |
| 0.55 | 126.0 | -0.186 | 0.1994 |
| 0.55 | 138.0 | -0.4497 | 0.1798 |
| 0.55 | 150.0 | -0.3253 | 0.2469 |
| 0.55 | 210.0 | 0.1199 | 0.2238 |
| 0.55 | 234.0 | -0.3039 | 0.2283 |
| 0.55 | 246.0 | 0.2707 | 0.249 |
| 0.55 | 258.0 | 0.1178 | 0.184 |
| 0.55 | 270.0 | -0.1815 | 0.157 |
| 0.55 | 282.0 | -0.1818 | 0.1656 |
| 0.65 | 66.0 | -0.529 | 0.1793 |
| 0.65 | 78.0 | 0.325 | 0.1747 |
| 0.65 | 114.0 | 0.0667 | 0.1625 |
| 0.65 | 126.0 | -0.0155 | 0.1695 |
| 0.65 | 138.0 | 0.3817 | 0.1596 |
| 0.65 | 150.0 | 0.3833 | 0.2002 |
| 0.65 | 186.0 | -0.2001 | 0.2562 |
| 0.65 | 198.0 | 0.1934 | 0.2432 |
| 0.65 | 210.0 | -0.1387 | 0.1803 |
| 0.65 | 222.0 | 0.498 | 0.1526 |
| 0.65 | 234.0 | 0.1492 | 0.1482 |
| 0.65 | 246.0 | 0.2603 | 0.1976 |
| 0.65 | 258.0 | -0.2002 | 0.2004 |
| 0.65 | 270.0 | 0.0022 | 0.1837 |
| 0.65 | 282.0 | 0.0088 | 0.2601 |
| 0.65 | 294.0 | -0.0215 | 0.1882 |
| 0.75 | 102.0 | -0.2009 | 0.2265 |
| 0.75 | 114.0 | 0.2397 | 0.1745 |
| 0.75 | 126.0 | -0.0713 | 0.1688 |
| 0.75 | 138.0 | 0.1988 | 0.1931 |
| 0.75 | 150.0 | 0.1807 | 0.2254 |
| 0.75 | 186.0 | -0.0354 | 0.2618 |
| 0.75 | 198.0 | 0.1879 | 0.2033 |
| 0.75 | 210.0 | -0.0984 | 0.1959 |
| 0.75 | 222.0 | -0.1169 | 0.168 |
| 0.75 | 234.0 | -0.1595 | 0.1735 |
| 0.75 | 246.0 | 0.1843 | 0.2 |
| 0.75 | 282.0 | -0.1864 | 0.1615 |
| 0.75 | 294.0 | -0.2667 | 0.2222 |
| 0.85 | 90.0 | 0.0507 | 0.2423 |
| 0.85 | 102.0 | -0.0306 | 0.1997 |
| 0.85 | 114.0 | 0.0107 | 0.2021 |
| 0.85 | 126.0 | -0.1042 | 0.2256 |
| 0.85 | 186.0 | 0.3569 | 0.2482 |
| 0.85 | 210.0 | 0.2023 | 0.2188 |
| 0.85 | 222.0 | -0.0112 | 0.1795 |
| 0.85 | 234.0 | -0.3311 | 0.1636 |
| 0.85 | 246.0 | 0.1276 | 0.1871 |
| 0.85 | 258.0 | -0.4627 | 0.2149 |
| 0.95 | 210.0 | -0.4637 | 0.2194 |
| 0.95 | 222.0 | 0.124 | 0.2222 |
| 0.95 | 234.0 | 0.5615 | 0.212 |
Experiment comment: