Measurement E8M9
| 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: | 1.26 — 1.28 GeV | |
| Ebeam: | 1.515 GeV | |
| Publication: |
under preparation //
|
|
| θπ, [deg] | φπ, [deg] | dσ/dΩ, [μb/sr] | uncertainty |
|---|---|---|---|
| 7.5 | 15.0 | 18.52 | 2.417 |
| 7.5 | 165.0 | 13.5 | 2.217 |
| 7.5 | 195.0 | 16.54 | 1.771 |
| 7.5 | 225.0 | 16.3 | 3.091 |
| 7.5 | 315.0 | 10.65 | 1.702 |
| 7.5 | 345.0 | 21.06 | 3.302 |
| 22.5 | 15.0 | 15.51 | 1.083 |
| 22.5 | 45.0 | 15.68 | 2.91 |
| 22.5 | 105.0 | 15.53 | 1.576 |
| 22.5 | 135.0 | 15.98 | 0.7567 |
| 22.5 | 165.0 | 14.49 | 0.6866 |
| 22.5 | 195.0 | 16.96 | 0.7949 |
| 22.5 | 225.0 | 14.85 | 0.7112 |
| 22.5 | 255.0 | 16.46 | 1.489 |
| 22.5 | 315.0 | 17.19 | 3.087 |
| 22.5 | 345.0 | 17.66 | 1.286 |
| 37.5 | 105.0 | 18.29 | 2.541 |
| 37.5 | 135.0 | 13.87 | 0.6455 |
| 37.5 | 165.0 | 12.28 | 0.4977 |
| 37.5 | 195.0 | 12.5 | 0.5212 |
| 37.5 | 225.0 | 15.29 | 0.756 |
| 37.5 | 255.0 | 14.89 | 1.503 |
| 52.5 | 45.0 | 11.49 | 1.183 |
| 52.5 | 75.0 | 14.42 | 1.508 |
| 52.5 | 105.0 | 16.36 | 0.8052 |
| 52.5 | 135.0 | 13.96 | 0.9588 |
| 52.5 | 165.0 | 10.36 | 0.4231 |
| 52.5 | 195.0 | 10.34 | 0.4218 |
| 52.5 | 225.0 | 14.76 | 1.161 |
| 52.5 | 255.0 | 14.71 | 0.752 |
| 52.5 | 285.0 | 14.97 | 1.051 |
| 52.5 | 315.0 | 11.76 | 0.9932 |
| 67.5 | 75.0 | 13.65 | 0.4755 |
| 67.5 | 105.0 | 14.17 | 0.5128 |
| 67.5 | 135.0 | 10.5 | 0.7246 |
| 67.5 | 165.0 | 8.56 | 0.4188 |
| 67.5 | 195.0 | 7.766 | 0.3899 |
| 67.5 | 225.0 | 12.87 | 1.263 |
| 67.5 | 255.0 | 15.53 | 0.5502 |
| 67.5 | 285.0 | 13.98 | 0.4799 |
| 82.5 | 45.0 | 8.085 | 0.7892 |
| 82.5 | 75.0 | 12.24 | 0.5207 |
| 82.5 | 105.0 | 14.43 | 0.5024 |
| 82.5 | 135.0 | 11.65 | 0.9412 |
| 82.5 | 165.0 | 6.77 | 0.3061 |
| 82.5 | 195.0 | 8.055 | 0.3706 |
| 82.5 | 225.0 | 10.84 | 0.77 |
| 82.5 | 255.0 | 13.62 | 0.4729 |
| 82.5 | 285.0 | 12.39 | 0.5362 |
| 82.5 | 315.0 | 8.93 | 0.8875 |
| 97.5 | 15.0 | 4.303 | 0.5456 |
| 97.5 | 45.0 | 7.448 | 0.3566 |
| 97.5 | 75.0 | 10.63 | 0.7316 |
| 97.5 | 105.0 | 10.99 | 0.4286 |
| 97.5 | 135.0 | 9.131 | 0.849 |
| 97.5 | 165.0 | 5.548 | 0.3193 |
| 97.5 | 195.0 | 5.988 | 0.3477 |
| 97.5 | 225.0 | 8.81 | 0.5945 |
| 97.5 | 255.0 | 12.06 | 0.4366 |
| 97.5 | 285.0 | 9.056 | 0.5445 |
| 97.5 | 315.0 | 7.376 | 0.35 |
| 97.5 | 345.0 | 4.2 | 0.4858 |
| 112.5 | 15.0 | 3.626 | 0.3267 |
| 112.5 | 45.0 | 6.096 | 0.3196 |
| 112.5 | 75.0 | 8.281 | 0.5679 |
| 112.5 | 105.0 | 8.591 | 0.363 |
| 112.5 | 135.0 | 8.257 | 0.9242 |
| 112.5 | 165.0 | 5.71 | 0.549 |
| 112.5 | 195.0 | 5.649 | 0.6982 |
| 112.5 | 225.0 | 6.032 | 0.4247 |
| 112.5 | 255.0 | 9.23 | 0.3788 |
| 112.5 | 285.0 | 9.446 | 0.6355 |
| 112.5 | 315.0 | 5.841 | 0.3326 |
| 112.5 | 345.0 | 4.045 | 0.3649 |
| 127.5 | 15.0 | 4.177 | 0.5725 |
| 127.5 | 45.0 | 4.928 | 0.3124 |
| 127.5 | 75.0 | 6.543 | 0.432 |
| 127.5 | 105.0 | 6.508 | 0.5261 |
| 127.5 | 135.0 | 5.307 | 0.4765 |
| 127.5 | 225.0 | 4.56 | 0.3696 |
| 127.5 | 255.0 | 7.348 | 0.715 |
| 127.5 | 285.0 | 6.695 | 0.5121 |
| 127.5 | 315.0 | 5.508 | 0.3493 |
| 127.5 | 345.0 | 3.165 | 0.3307 |
| 142.5 | 15.0 | 3.296 | 0.342 |
| 142.5 | 45.0 | 3.598 | 0.3483 |
| 142.5 | 75.0 | 4.922 | 0.3264 |
| 142.5 | 285.0 | 4.993 | 0.3721 |
| 142.5 | 315.0 | 3.79 | 0.4173 |
| 142.5 | 345.0 | 2.895 | 0.2927 |
| 157.5 | 15.0 | 2.582 | 0.3658 |
| 157.5 | 345.0 | 2.485 | 0.3308 |
Measurement comment:
Experiment comment: