Measurement E8M20
| 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: | 1.48 — 1.5 GeV | |
| Ebeam: | 1.515 GeV | |
| Publication: |
under preparation //
|
|
| θπ, [deg] | φπ, [deg] | dσ/dΩ, [μb/sr] | uncertainty |
|---|---|---|---|
| 7.5 | 15.0 | 12.9 | 1.188 |
| 7.5 | 45.0 | 11.51 | 1.279 |
| 7.5 | 75.0 | 10.59 | 1.154 |
| 7.5 | 105.0 | 8.932 | 0.8629 |
| 7.5 | 135.0 | 7.246 | 0.7171 |
| 7.5 | 165.0 | 7.876 | 0.7312 |
| 7.5 | 195.0 | 7.936 | 0.7626 |
| 7.5 | 225.0 | 8.944 | 0.8303 |
| 7.5 | 255.0 | 10.6 | 1.06 |
| 7.5 | 285.0 | 10.76 | 1.333 |
| 7.5 | 315.0 | 13.73 | 1.795 |
| 7.5 | 345.0 | 12.9 | 1.207 |
| 22.5 | 75.0 | 8.386 | 1.134 |
| 22.5 | 105.0 | 6.922 | 1.022 |
| 22.5 | 135.0 | 7.229 | 0.6047 |
| 22.5 | 165.0 | 4.939 | 0.4002 |
| 22.5 | 195.0 | 4.625 | 0.3546 |
| 22.5 | 225.0 | 5.706 | 0.5037 |
| 22.5 | 255.0 | 9.499 | 1.454 |
| 22.5 | 285.0 | 8.743 | 1.709 |
| 37.5 | 75.0 | 9.379 | 0.4025 |
| 37.5 | 105.0 | 11.17 | 0.9902 |
| 37.5 | 255.0 | 8.801 | 0.6607 |
| 37.5 | 285.0 | 9.946 | 0.4031 |
| 52.5 | 45.0 | 6.328 | 0.6412 |
| 52.5 | 75.0 | 9.019 | 0.4102 |
| 52.5 | 165.0 | 3.529 | 0.2027 |
| 52.5 | 195.0 | 3.389 | 0.2016 |
| 52.5 | 285.0 | 8.403 | 0.4055 |
| 52.5 | 315.0 | 5.706 | 0.6535 |
| 67.5 | 15.0 | 3.17 | 0.5213 |
| 67.5 | 45.0 | 5.852 | 0.3819 |
| 67.5 | 105.0 | 8.447 | 0.4414 |
| 67.5 | 135.0 | 5.132 | 0.2983 |
| 67.5 | 165.0 | 2.98 | 0.1554 |
| 67.5 | 195.0 | 3.216 | 0.168 |
| 67.5 | 225.0 | 6.167 | 0.4003 |
| 67.5 | 255.0 | 8.172 | 0.3512 |
| 67.5 | 315.0 | 5.69 | 0.3684 |
| 67.5 | 345.0 | 4.571 | 1.389 |
| 82.5 | 45.0 | 4.989 | 0.8007 |
| 82.5 | 75.0 | 7.174 | 0.4258 |
| 82.5 | 105.0 | 7.454 | 0.2776 |
| 82.5 | 135.0 | 5.579 | 0.3278 |
| 82.5 | 165.0 | 2.51 | 0.1512 |
| 82.5 | 195.0 | 2.67 | 0.1569 |
| 82.5 | 225.0 | 4.955 | 0.316 |
| 82.5 | 255.0 | 7.356 | 0.2737 |
| 82.5 | 285.0 | 7.54 | 0.4506 |
| 82.5 | 315.0 | 4.561 | 0.5454 |
| 82.5 | 345.0 | 3.909 | 1.413 |
| 97.5 | 15.0 | 1.894 | 0.2654 |
| 97.5 | 45.0 | 3.895 | 0.2141 |
| 97.5 | 75.0 | 5.761 | 0.349 |
| 97.5 | 105.0 | 6.004 | 0.2545 |
| 97.5 | 135.0 | 4.256 | 0.2846 |
| 97.5 | 165.0 | 2.759 | 0.1999 |
| 97.5 | 195.0 | 2.989 | 0.225 |
| 97.5 | 225.0 | 4.784 | 0.3392 |
| 97.5 | 255.0 | 6.499 | 0.2742 |
| 97.5 | 285.0 | 5.583 | 0.3408 |
| 97.5 | 315.0 | 4.153 | 0.2219 |
| 97.5 | 345.0 | 1.637 | 0.2172 |
| 112.5 | 15.0 | 1.436 | 0.1738 |
| 112.5 | 45.0 | 3.205 | 0.2109 |
| 112.5 | 75.0 | 5.501 | 0.371 |
| 112.5 | 105.0 | 5.132 | 0.2839 |
| 112.5 | 135.0 | 3.844 | 0.245 |
| 112.5 | 165.0 | 2.171 | 0.1676 |
| 112.5 | 195.0 | 2.467 | 0.1994 |
| 112.5 | 225.0 | 4.2 | 0.2827 |
| 112.5 | 255.0 | 5.503 | 0.2659 |
| 112.5 | 285.0 | 4.996 | 0.3587 |
| 112.5 | 315.0 | 3.282 | 0.2325 |
| 112.5 | 345.0 | 1.048 | 0.1356 |
| 127.5 | 15.0 | 0.9068 | 0.1218 |
| 127.5 | 45.0 | 2.44 | 0.2038 |
| 127.5 | 75.0 | 3.737 | 0.2677 |
| 127.5 | 105.0 | 3.71 | 0.2884 |
| 127.5 | 135.0 | 3.108 | 0.3226 |
| 127.5 | 165.0 | 2.345 | 0.4025 |
| 127.5 | 195.0 | 1.976 | 0.4067 |
| 127.5 | 225.0 | 3.474 | 0.4179 |
| 127.5 | 255.0 | 3.616 | 0.2532 |
| 127.5 | 285.0 | 3.741 | 0.2734 |
| 127.5 | 315.0 | 2.479 | 0.2194 |
| 127.5 | 345.0 | 1.057 | 0.1361 |
| 142.5 | 15.0 | 0.7624 | 0.1147 |
| 142.5 | 45.0 | 1.862 | 0.2357 |
| 142.5 | 75.0 | 2.801 | 0.2713 |
| 142.5 | 105.0 | 3.407 | 0.7007 |
| 142.5 | 135.0 | 2.829 | 0.6935 |
| 142.5 | 255.0 | 2.486 | 0.4564 |
| 142.5 | 285.0 | 2.691 | 0.2864 |
| 142.5 | 315.0 | 1.583 | 0.2289 |
| 142.5 | 345.0 | 0.9598 | 0.1391 |
| 157.5 | 15.0 | 1.097 | 0.2906 |
| 157.5 | 345.0 | 1.029 | 0.3339 |
Measurement comment:
Experiment comment: