Measurement E8M21
| Experiment: | E89-038 CLAS experiment | |
|---|---|---|
| Year: | 1999 | |
| Spokespersons: | V. Burkert, R. Minehart | |
| Reaction: | ep → π+n | |
| Polarization: | none | |
| Quantity: | dσ/dΩ | |
| Q2: | 0.25 — 0.35 GeV2 | |
| W: | 1.5 — 1.52 GeV | |
| Ebeam: | 1.515 GeV | |
| Publication: |
under preparation //
|
|
| θπ, [deg] | φπ, [deg] | dσ/dΩ, [μb/sr] | uncertainty |
|---|---|---|---|
| 7.5 | 15.0 | 13.9 | 1.486 |
| 7.5 | 45.0 | 11.85 | 1.598 |
| 7.5 | 75.0 | 11.33 | 1.592 |
| 7.5 | 105.0 | 10.11 | 1.012 |
| 7.5 | 135.0 | 8.175 | 0.7737 |
| 7.5 | 165.0 | 8.909 | 0.7968 |
| 7.5 | 195.0 | 9.5 | 0.8515 |
| 7.5 | 225.0 | 9.765 | 0.9108 |
| 7.5 | 255.0 | 12.13 | 1.273 |
| 7.5 | 285.0 | 17.42 | 2.677 |
| 7.5 | 315.0 | 13.43 | 2.083 |
| 7.5 | 345.0 | 14.83 | 1.664 |
| 22.5 | 75.0 | 14.04 | 2.752 |
| 22.5 | 105.0 | 9.742 | 1.522 |
| 22.5 | 135.0 | 6.713 | 0.5556 |
| 22.5 | 165.0 | 5.75 | 0.3983 |
| 22.5 | 195.0 | 5.825 | 0.3898 |
| 22.5 | 225.0 | 6.905 | 0.5893 |
| 22.5 | 255.0 | 9.167 | 1.628 |
| 22.5 | 285.0 | 7.782 | 1.458 |
| 37.5 | 75.0 | 9.35 | 0.4056 |
| 37.5 | 105.0 | 7.582 | 0.7596 |
| 37.5 | 135.0 | 5.521 | 0.8274 |
| 37.5 | 225.0 | 7.155 | 1.135 |
| 37.5 | 255.0 | 8.411 | 0.6148 |
| 37.5 | 285.0 | 8.781 | 0.3559 |
| 52.5 | 45.0 | 5.862 | 0.8379 |
| 52.5 | 75.0 | 7.185 | 0.3761 |
| 52.5 | 105.0 | 8.687 | 1.199 |
| 52.5 | 165.0 | 3.254 | 0.2877 |
| 52.5 | 195.0 | 2.808 | 0.2551 |
| 52.5 | 255.0 | 7.592 | 0.9833 |
| 52.5 | 285.0 | 7.165 | 0.3456 |
| 52.5 | 315.0 | 5.725 | 0.7819 |
| 67.5 | 15.0 | 2.013 | 0.2756 |
| 67.5 | 45.0 | 4.149 | 0.2464 |
| 67.5 | 75.0 | 5.282 | 0.6236 |
| 67.5 | 105.0 | 6.934 | 1.168 |
| 67.5 | 135.0 | 4.085 | 0.2585 |
| 67.5 | 165.0 | 2.613 | 0.1452 |
| 67.5 | 195.0 | 2.465 | 0.1393 |
| 67.5 | 225.0 | 4.509 | 0.2822 |
| 67.5 | 255.0 | 6.314 | 0.3616 |
| 67.5 | 315.0 | 4.337 | 0.2643 |
| 67.5 | 345.0 | 2.408 | 0.3878 |
| 82.5 | 45.0 | 3.422 | 0.3638 |
| 82.5 | 75.0 | 5.561 | 0.4013 |
| 82.5 | 105.0 | 5.468 | 0.2221 |
| 82.5 | 135.0 | 4.058 | 0.2426 |
| 82.5 | 165.0 | 2.333 | 0.1407 |
| 82.5 | 195.0 | 2.209 | 0.1354 |
| 82.5 | 225.0 | 3.746 | 0.2453 |
| 82.5 | 255.0 | 6.332 | 0.2467 |
| 82.5 | 285.0 | 5.874 | 0.4446 |
| 82.5 | 315.0 | 3.792 | 0.5321 |
| 97.5 | 15.0 | 1.407 | 0.1584 |
| 97.5 | 45.0 | 3.184 | 0.1786 |
| 97.5 | 75.0 | 5.523 | 0.3346 |
| 97.5 | 105.0 | 5.32 | 0.2312 |
| 97.5 | 135.0 | 3.714 | 0.2635 |
| 97.5 | 165.0 | 2.478 | 0.2105 |
| 97.5 | 195.0 | 2.297 | 0.1731 |
| 97.5 | 225.0 | 4.093 | 0.2651 |
| 97.5 | 255.0 | 5.333 | 0.2443 |
| 97.5 | 285.0 | 5.308 | 0.3298 |
| 97.5 | 315.0 | 3.361 | 0.1964 |
| 97.5 | 345.0 | 1.317 | 0.1681 |
| 112.5 | 15.0 | 1.589 | 0.1741 |
| 112.5 | 45.0 | 3.094 | 0.2015 |
| 112.5 | 75.0 | 4.789 | 0.2863 |
| 112.5 | 105.0 | 4.843 | 0.2571 |
| 112.5 | 135.0 | 3.959 | 0.2397 |
| 112.5 | 165.0 | 2.183 | 0.1631 |
| 112.5 | 195.0 | 2.227 | 0.161 |
| 112.5 | 225.0 | 3.515 | 0.2271 |
| 112.5 | 255.0 | 5.354 | 0.2621 |
| 112.5 | 285.0 | 4.755 | 0.3245 |
| 112.5 | 315.0 | 2.892 | 0.2081 |
| 112.5 | 345.0 | 1.411 | 0.1596 |
| 127.5 | 15.0 | 1.213 | 0.1441 |
| 127.5 | 45.0 | 2.447 | 0.1984 |
| 127.5 | 75.0 | 3.833 | 0.2534 |
| 127.5 | 105.0 | 3.532 | 0.2394 |
| 127.5 | 135.0 | 3.069 | 0.2741 |
| 127.5 | 165.0 | 1.734 | 0.2681 |
| 127.5 | 195.0 | 2.258 | 0.3352 |
| 127.5 | 225.0 | 3.112 | 0.2388 |
| 127.5 | 255.0 | 3.747 | 0.2479 |
| 127.5 | 285.0 | 3.533 | 0.2386 |
| 127.5 | 315.0 | 2.576 | 0.2118 |
| 127.5 | 345.0 | 1.32 | 0.1488 |
| 142.5 | 15.0 | 1.191 | 0.1569 |
| 142.5 | 45.0 | 1.994 | 0.2047 |
| 142.5 | 75.0 | 2.785 | 0.2493 |
| 142.5 | 105.0 | 2.792 | 0.6034 |
| 142.5 | 255.0 | 2.794 | 0.7216 |
| 142.5 | 285.0 | 3.128 | 0.4251 |
| 142.5 | 315.0 | 2.372 | 0.825 |
| 142.5 | 345.0 | 1.284 | 0.186 |
| 157.5 | 15.0 | 1.261 | 0.2947 |
| 157.5 | 345.0 | 1.239 | 0.2701 |
Measurement comment:
Experiment comment: