Measurement E151M3291
| Experiment: | EG4 | |
|---|---|---|
| Year: | 2016 | |
| Spokesperson: | Xiaochao Zheng | |
| Reaction: | ep → π+n | |
| Polarization: | beam (longitudinal), target (longitudinal) | |
| Quantity: | ALU | |
| εL: | 0.1069 | |
| Q2: | 0.0707 GeV2 | |
| W: | 1505.0 GeV | |
| Ebeam: | 2.2596 GeV | |
| ε: | 0.9085 | |
| cos(θπ+) | φ(π+), [deg] | ALU | uncertainty |
|---|---|---|---|
| 0.25 | 54.0 | -0.034 | 0.1856 |
| 0.25 | 66.0 | 0.3365 | 0.1433 |
| 0.25 | 78.0 | -0.1904 | 0.1567 |
| 0.25 | 282.0 | 0.2237 | 0.1941 |
| 0.25 | 294.0 | 0.2619 | 0.1545 |
| 0.35 | 66.0 | 0.1848 | 0.1165 |
| 0.35 | 78.0 | 0.1145 | 0.1295 |
| 0.35 | 90.0 | -0.4122 | 0.2304 |
| 0.35 | 270.0 | 0.159 | 0.1447 |
| 0.35 | 282.0 | -0.0842 | 0.1262 |
| 0.35 | 294.0 | -0.2147 | 0.1373 |
| 0.35 | 306.0 | 0.0284 | 0.1773 |
| 0.45 | 66.0 | -0.0782 | 0.1337 |
| 0.45 | 78.0 | -0.0892 | 0.1328 |
| 0.45 | 90.0 | 0.0877 | 0.1562 |
| 0.45 | 102.0 | -0.1398 | 0.1612 |
| 0.45 | 126.0 | -0.5539 | 0.2217 |
| 0.45 | 258.0 | 0.2629 | 0.1588 |
| 0.45 | 270.0 | -0.0542 | 0.1275 |
| 0.45 | 282.0 | 0.0314 | 0.1182 |
| 0.45 | 294.0 | -0.0727 | 0.1312 |
| 0.55 | 66.0 | -0.4044 | 0.2444 |
| 0.55 | 78.0 | -0.4083 | 0.1966 |
| 0.55 | 90.0 | -0.1577 | 0.143 |
| 0.55 | 102.0 | 0.0158 | 0.1529 |
| 0.55 | 114.0 | -0.1426 | 0.1384 |
| 0.55 | 126.0 | -0.0666 | 0.1361 |
| 0.55 | 138.0 | -0.0503 | 0.148 |
| 0.55 | 222.0 | -0.1925 | 0.1603 |
| 0.55 | 234.0 | 0.0192 | 0.1569 |
| 0.55 | 246.0 | -0.1105 | 0.2362 |
| 0.55 | 258.0 | 0.2414 | 0.2153 |
| 0.55 | 270.0 | 0.1835 | 0.1328 |
| 0.55 | 282.0 | 0.0217 | 0.1201 |
| 0.65 | 66.0 | -0.4394 | 0.1993 |
| 0.65 | 78.0 | -0.2281 | 0.2389 |
| 0.65 | 102.0 | 0.2326 | 0.1694 |
| 0.65 | 114.0 | 0.0638 | 0.1569 |
| 0.65 | 126.0 | -0.1396 | 0.1675 |
| 0.65 | 138.0 | -0.0687 | 0.1729 |
| 0.65 | 150.0 | -0.0557 | 0.2151 |
| 0.65 | 198.0 | 0.3455 | 0.2391 |
| 0.65 | 210.0 | 0.1274 | 0.2055 |
| 0.65 | 222.0 | 0.1017 | 0.2213 |
| 0.65 | 234.0 | -0.1238 | 0.1701 |
| 0.65 | 246.0 | 0.1849 | 0.1993 |
| 0.65 | 258.0 | 0.1801 | 0.1962 |
| 0.65 | 270.0 | -0.0079 | 0.2178 |
| 0.65 | 282.0 | 0.2462 | 0.241 |
| 0.65 | 294.0 | -0.2528 | 0.1898 |
| 0.65 | 306.0 | -0.0256 | 0.2632 |
| 0.75 | 66.0 | 0.0988 | 0.2376 |
| 0.75 | 78.0 | -0.3826 | 0.2623 |
| 0.75 | 90.0 | 0.2347 | 0.2544 |
| 0.75 | 102.0 | 0.3623 | 0.224 |
| 0.75 | 114.0 | 0.1357 | 0.1579 |
| 0.75 | 126.0 | -0.0662 | 0.1597 |
| 0.75 | 138.0 | 0.0272 | 0.1933 |
| 0.75 | 150.0 | 0.2941 | 0.2094 |
| 0.75 | 198.0 | 0.0983 | 0.2102 |
| 0.75 | 210.0 | -0.112 | 0.1699 |
| 0.75 | 222.0 | -0.0822 | 0.1547 |
| 0.75 | 234.0 | 0.0001 | 0.1757 |
| 0.75 | 246.0 | 0.0282 | 0.1682 |
| 0.75 | 258.0 | 0.3307 | 0.2062 |
| 0.75 | 270.0 | -0.119 | 0.2519 |
| 0.75 | 282.0 | 0.0379 | 0.1885 |
| 0.75 | 294.0 | 0.1579 | 0.2031 |
| 0.85 | 90.0 | -0.3126 | 0.1889 |
| 0.85 | 102.0 | 0.2066 | 0.1842 |
| 0.85 | 126.0 | 0.2278 | 0.2132 |
| 0.85 | 138.0 | 0.0888 | 0.2299 |
| 0.85 | 198.0 | 0.1205 | 0.2169 |
| 0.85 | 210.0 | 0.0651 | 0.1792 |
| 0.85 | 222.0 | 0.0049 | 0.1773 |
| 0.85 | 234.0 | -0.1169 | 0.1751 |
| 0.85 | 246.0 | 0.0884 | 0.1727 |
| 0.85 | 258.0 | -0.1294 | 0.2333 |
| 0.85 | 270.0 | 0.0432 | 0.2289 |
| 0.95 | 102.0 | -0.0896 | 0.2595 |
| 0.95 | 114.0 | -0.0675 | 0.2012 |
| 0.95 | 210.0 | 0.0682 | 0.2463 |
| 0.95 | 222.0 | 0.4868 | 0.2388 |
| 0.95 | 234.0 | 0.399 | 0.1882 |
| 0.95 | 246.0 | -0.4517 | 0.2198 |
| 0.55 | 294.0 | -0.226 | 0.2397 |
| 0.65 | 66.0 | 0.4098 | 0.208 |
| 0.65 | 78.0 | 0.0008 | 0.2456 |
| 0.65 | 90.0 | -0.009 | 0.2564 |
| 0.65 | 102.0 | 0.2052 | 0.2156 |
| 0.65 | 114.0 | -0.1639 | 0.1808 |
| 0.65 | 126.0 | 0.0548 | 0.1865 |
| 0.65 | 138.0 | -0.1441 | 0.2158 |
| 0.65 | 150.0 | 0.1531 | 0.2541 |
| 0.65 | 198.0 | 0.3408 | 0.2253 |
| 0.65 | 210.0 | 0.041 | 0.2009 |
| 0.65 | 222.0 | -0.0006 | 0.1732 |
| 0.65 | 234.0 | 0.0476 | 0.1808 |
| 0.65 | 246.0 | 0.06 | 0.2069 |
| 0.65 | 258.0 | 0.1878 | 0.2282 |
| 0.65 | 270.0 | -0.0514 | 0.2213 |
| 0.65 | 282.0 | 0.1088 | 0.2172 |
| 0.65 | 294.0 | 0.1875 | 0.1979 |
| 0.65 | 306.0 | 0.3884 | 0.2342 |
| 0.75 | 66.0 | -0.5537 | 0.1903 |
| 0.75 | 78.0 | 0.1412 | 0.2739 |
| 0.75 | 102.0 | 0.3041 | 0.2272 |
| 0.75 | 114.0 | -0.0813 | 0.1561 |
| 0.75 | 126.0 | -0.0177 | 0.1844 |
| 0.75 | 138.0 | -0.0489 | 0.1702 |
| 0.75 | 150.0 | -0.23 | 0.2167 |
| 0.75 | 198.0 | 0.012 | 0.259 |
| 0.75 | 210.0 | -0.2622 | 0.1929 |
| 0.75 | 222.0 | -0.2985 | 0.1883 |
| 0.75 | 234.0 | 0.1229 | 0.1575 |
| 0.75 | 246.0 | -0.0607 | 0.1772 |
| 0.75 | 258.0 | 0.3512 | 0.2475 |
| 0.75 | 270.0 | -0.4297 | 0.2166 |
| 0.75 | 282.0 | -0.1465 | 0.2021 |
| 0.75 | 294.0 | 0.1223 | 0.1901 |
| 0.85 | 90.0 | -0.0364 | 0.2333 |
| 0.85 | 102.0 | 0.2781 | 0.2007 |
| 0.85 | 114.0 | 0.2462 | 0.2216 |
| 0.85 | 126.0 | -0.4216 | 0.2152 |
| 0.85 | 138.0 | -0.2029 | 0.227 |
| 0.85 | 198.0 | -0.0027 | 0.2455 |
| 0.85 | 210.0 | 0.216 | 0.1971 |
| 0.85 | 222.0 | -0.238 | 0.2038 |
| 0.85 | 234.0 | -0.0634 | 0.1718 |
| 0.85 | 246.0 | 0.0424 | 0.1751 |
| 0.85 | 258.0 | 0.3564 | 0.1996 |
| 0.85 | 270.0 | 0.2786 | 0.2303 |
| 0.95 | 234.0 | 0.2687 | 0.2068 |
| 0.95 | 246.0 | -0.1533 | 0.2358 |
Experiment comment: