Measurement E8M42
| Experiment: | E89-038 CLAS experiment | |
|---|---|---|
| Year: | 1999 | |
| Spokespersons: | V. Burkert, R. Minehart | |
| Reaction: | ep → π+n | |
| Polarization: | none | |
| Quantity: | dσ/dΩ | |
| Q2: | 0.35 — 0.45 GeV2 | |
| W: | 1.44 — 1.46 GeV | |
| Ebeam: | 1.515 GeV | |
| Publication: |
under preparation //
|
|
| θπ, [deg] | φπ, [deg] | dσ/dΩ, [μb/sr] | uncertainty |
|---|---|---|---|
| 7.5 | 15.0 | 9.262 | 0.9163 |
| 7.5 | 45.0 | 6.2 | 0.7175 |
| 7.5 | 75.0 | 7.015 | 0.8012 |
| 7.5 | 105.0 | 7.136 | 0.7972 |
| 7.5 | 135.0 | 6.815 | 0.7404 |
| 7.5 | 165.0 | 7.572 | 0.8584 |
| 7.5 | 195.0 | 6.163 | 0.6543 |
| 7.5 | 225.0 | 7.534 | 0.8146 |
| 7.5 | 255.0 | 10.34 | 1.149 |
| 7.5 | 285.0 | 9.204 | 1.094 |
| 7.5 | 315.0 | 7.182 | 0.8347 |
| 7.5 | 345.0 | 9.283 | 0.8458 |
| 22.5 | 45.0 | 8.804 | 2.052 |
| 22.5 | 75.0 | 7.789 | 1.027 |
| 22.5 | 105.0 | 7.933 | 0.8702 |
| 22.5 | 135.0 | 6.034 | 0.5284 |
| 22.5 | 165.0 | 4.257 | 0.3603 |
| 22.5 | 195.0 | 4.342 | 0.3672 |
| 22.5 | 225.0 | 5.623 | 0.4998 |
| 22.5 | 255.0 | 7.152 | 0.8289 |
| 22.5 | 285.0 | 9.001 | 1.186 |
| 22.5 | 315.0 | 9.089 | 1.93 |
| 37.5 | 45.0 | 7.662 | 0.6179 |
| 37.5 | 75.0 | 8.723 | 0.4438 |
| 37.5 | 105.0 | 8.819 | 0.7769 |
| 37.5 | 195.0 | 5.915 | 1.818 |
| 37.5 | 255.0 | 6.929 | 0.885 |
| 37.5 | 285.0 | 8.358 | 0.4269 |
| 37.5 | 315.0 | 7.86 | 0.5482 |
| 52.5 | 45.0 | 4.772 | 0.4858 |
| 52.5 | 75.0 | 7.461 | 0.3535 |
| 52.5 | 135.0 | 4.534 | 0.6519 |
| 52.5 | 165.0 | 2.8 | 0.1736 |
| 52.5 | 195.0 | 2.966 | 0.1797 |
| 52.5 | 225.0 | 4.824 | 0.5762 |
| 52.5 | 285.0 | 6.963 | 0.3371 |
| 52.5 | 315.0 | 4.943 | 0.4622 |
| 67.5 | 15.0 | 2.375 | 0.4376 |
| 67.5 | 45.0 | 4.425 | 0.3338 |
| 67.5 | 75.0 | 5.993 | 0.8793 |
| 67.5 | 105.0 | 6.05 | 0.3454 |
| 67.5 | 135.0 | 4.075 | 0.2669 |
| 67.5 | 165.0 | 2.633 | 0.1569 |
| 67.5 | 195.0 | 2.414 | 0.1494 |
| 67.5 | 225.0 | 4.052 | 0.247 |
| 67.5 | 255.0 | 5.886 | 0.3309 |
| 67.5 | 285.0 | 6.967 | 1.122 |
| 67.5 | 315.0 | 4.551 | 0.3655 |
| 67.5 | 345.0 | 3.248 | 1.006 |
| 82.5 | 15.0 | 1.473 | 0.3187 |
| 82.5 | 45.0 | 4.551 | 2.016 |
| 82.5 | 75.0 | 4.528 | 0.5325 |
| 82.5 | 105.0 | 4.895 | 0.2287 |
| 82.5 | 135.0 | 3.474 | 0.2263 |
| 82.5 | 165.0 | 2.155 | 0.141 |
| 82.5 | 195.0 | 2.446 | 0.162 |
| 82.5 | 225.0 | 3.468 | 0.2317 |
| 82.5 | 255.0 | 5.075 | 0.2159 |
| 82.5 | 285.0 | 4.522 | 0.4079 |
| 82.5 | 315.0 | 3.355 | 0.5892 |
| 82.5 | 345.0 | 1.349 | 0.2725 |
| 97.5 | 45.0 | 2.024 | 0.1424 |
| 97.5 | 75.0 | 3.519 | 0.2544 |
| 97.5 | 105.0 | 3.525 | 0.1921 |
| 97.5 | 135.0 | 2.736 | 0.2054 |
| 97.5 | 165.0 | 1.715 | 0.1404 |
| 97.5 | 195.0 | 1.957 | 0.1663 |
| 97.5 | 225.0 | 2.402 | 0.206 |
| 97.5 | 255.0 | 3.324 | 0.1781 |
| 97.5 | 285.0 | 3.315 | 0.2295 |
| 97.5 | 315.0 | 2.128 | 0.1459 |
| 112.5 | 15.0 | 0.6453 | 0.09795 |
| 112.5 | 45.0 | 1.517 | 0.1382 |
| 112.5 | 75.0 | 2.285 | 0.2146 |
| 112.5 | 105.0 | 2.511 | 0.1724 |
| 112.5 | 135.0 | 1.894 | 0.1531 |
| 112.5 | 165.0 | 1.526 | 0.1386 |
| 112.5 | 195.0 | 1.397 | 0.1267 |
| 112.5 | 225.0 | 1.921 | 0.1504 |
| 112.5 | 255.0 | 2.066 | 0.141 |
| 112.5 | 285.0 | 2.391 | 0.2094 |
| 112.5 | 315.0 | 1.351 | 0.1202 |
| 112.5 | 345.0 | 0.7812 | 0.1572 |
| 127.5 | 15.0 | 0.3762 | 0.07102 |
| 127.5 | 45.0 | 0.7738 | 0.0972 |
| 127.5 | 75.0 | 1.621 | 0.158 |
| 127.5 | 105.0 | 1.647 | 0.1525 |
| 127.5 | 135.0 | 1.392 | 0.1928 |
| 127.5 | 165.0 | 1.335 | 0.226 |
| 127.5 | 195.0 | 1.3 | 0.1908 |
| 127.5 | 225.0 | 1.062 | 0.1193 |
| 127.5 | 255.0 | 1.517 | 0.144 |
| 127.5 | 285.0 | 1.87 | 0.1887 |
| 127.5 | 315.0 | 1.283 | 0.1761 |
| 127.5 | 345.0 | 0.5189 | 0.08563 |
| 142.5 | 15.0 | 0.2427 | 0.06484 |
| 142.5 | 45.0 | 0.617 | 0.1228 |
| 142.5 | 75.0 | 1.011 | 0.1293 |
| 142.5 | 105.0 | 1.002 | 0.4126 |
| 142.5 | 135.0 | 0.9638 | 0.263 |
| 142.5 | 225.0 | 0.7827 | 0.1443 |
| 142.5 | 255.0 | 1.1 | 0.3599 |
| 142.5 | 285.0 | 0.9238 | 0.1474 |
| 142.5 | 315.0 | 0.7372 | 0.1183 |
| 142.5 | 345.0 | 0.2567 | 0.06499 |
| 157.5 | 15.0 | 0.2602 | 0.1005 |
| 157.5 | 345.0 | 0.2572 | 0.1335 |
Measurement comment:
Experiment comment: