Measurement E141M19
| Experiment: | Measurement of ep→e′nπ+ at 1.6<W<2.0 GeV and extraction of nucleon resonance electrocoupling at CLAS | |
|---|---|---|
| Year: | 2014 | |
| Spokespersons: | K. Park, V.D. Burkert, I.G. Aznauryan | |
| Reaction: | ep → π+n | |
| Polarization: | beam | |
| Quantity: | dσ/dΩ | |
| Q2: | 1.8 GeV2 | |
| W: | 1.78 GeV | |
| Ebeam: | 5.499 GeV | |
| Publication: | ||
| cos(θ) | φ, [degree] | dσ/dΩ, [μb/rad] | uncertainty |
|---|---|---|---|
| -0.9 | 7.5 | 0.158 | 0.0284 |
| -0.9 | 22.5 | 0.1578 | 0.0361 |
| -0.9 | 37.5 | 0.2319 | 0.05 |
| -0.9 | 52.5 | 0.2947 | 0.0517 |
| -0.9 | 67.5 | 0.2265 | 0.0414 |
| -0.9 | 82.5 | 0.2419 | 0.0491 |
| -0.9 | 97.5 | 0.2277 | 0.0524 |
| -0.9 | 112.5 | 0.3778 | 0.0776 |
| -0.9 | 127.5 | 0.2256 | 0.0426 |
| -0.9 | 172.5 | 0.3403 | 0.0859 |
| -0.9 | 187.5 | 0.1392 | 0.0427 |
| -0.9 | 202.5 | 0.2008 | 0.0778 |
| -0.9 | 217.5 | 0.1755 | 0.05 |
| -0.9 | 232.5 | 0.2708 | 0.0545 |
| -0.9 | 247.5 | 0.3403 | 0.0608 |
| -0.9 | 262.5 | 0.1699 | 0.0448 |
| -0.9 | 277.5 | 0.3106 | 0.0609 |
| -0.9 | 292.5 | 0.2268 | 0.0393 |
| -0.9 | 307.5 | 0.1374 | 0.0251 |
| -0.9 | 322.5 | 0.2349 | 0.049 |
| -0.9 | 337.5 | 0.1747 | 0.0369 |
| -0.9 | 352.5 | 0.1626 | 0.0323 |
| -0.7 | 7.5 | 0.1049 | 0.0184 |
| -0.7 | 22.5 | 0.0924 | 0.0212 |
| -0.7 | 37.5 | 0.1686 | 0.0266 |
| -0.7 | 52.5 | 0.153 | 0.0224 |
| -0.7 | 67.5 | 0.1127 | 0.0189 |
| -0.7 | 82.5 | 0.1134 | 0.0232 |
| -0.7 | 97.5 | 0.1016 | 0.017 |
| -0.7 | 112.5 | 0.1362 | 0.0201 |
| -0.7 | 127.5 | 0.1025 | 0.0184 |
| -0.7 | 142.5 | 0.1426 | 0.0279 |
| -0.7 | 157.5 | 0.0871 | 0.0137 |
| -0.7 | 172.5 | 0.065 | 0.0133 |
| -0.7 | 187.5 | 0.1372 | 0.022 |
| -0.7 | 202.5 | 0.1154 | 0.0193 |
| -0.7 | 217.5 | 0.095 | 0.0198 |
| -0.7 | 232.5 | 0.0838 | 0.0156 |
| -0.7 | 247.5 | 0.1194 | 0.0172 |
| -0.7 | 262.5 | 0.111 | 0.0175 |
| -0.7 | 277.5 | 0.1481 | 0.0262 |
| -0.7 | 292.5 | 0.1234 | 0.0214 |
| -0.7 | 307.5 | 0.0938 | 0.015 |
| -0.7 | 322.5 | 0.1797 | 0.0295 |
| -0.7 | 337.5 | 0.1524 | 0.0301 |
| -0.7 | 352.5 | 0.1597 | 0.0259 |
| -0.5 | 7.5 | 0.2189 | 0.0382 |
| -0.5 | 22.5 | 0.2651 | 0.0594 |
| -0.5 | 37.5 | 0.177 | 0.0295 |
| -0.5 | 52.5 | 0.1469 | 0.026 |
| -0.5 | 67.5 | 0.2314 | 0.0382 |
| -0.5 | 82.5 | 0.2056 | 0.0292 |
| -0.5 | 97.5 | 0.1613 | 0.0192 |
| -0.5 | 112.5 | 0.18 | 0.023 |
| -0.5 | 127.5 | 0.1361 | 0.0187 |
| -0.5 | 142.5 | 0.1999 | 0.0313 |
| -0.5 | 157.5 | 0.1315 | 0.0187 |
| -0.5 | 172.5 | 0.0981 | 0.0161 |
| -0.5 | 187.5 | 0.1782 | 0.0247 |
| -0.5 | 202.5 | 0.1325 | 0.0206 |
| -0.5 | 217.5 | 0.1664 | 0.0262 |
| -0.5 | 232.5 | 0.162 | 0.0215 |
| -0.5 | 247.5 | 0.151 | 0.0197 |
| -0.5 | 262.5 | 0.1818 | 0.0222 |
| -0.5 | 277.5 | 0.1666 | 0.023 |
| -0.5 | 292.5 | 0.1979 | 0.0329 |
| -0.5 | 307.5 | 0.2597 | 0.0364 |
| -0.5 | 322.5 | 0.248 | 0.0384 |
| -0.5 | 337.5 | 0.1956 | 0.0498 |
| -0.5 | 352.5 | 0.1621 | 0.0302 |
| -0.3 | 7.5 | 0.1838 | 0.0426 |
| -0.3 | 22.5 | 0.3361 | 0.0724 |
| -0.3 | 37.5 | 0.296 | 0.0453 |
| -0.3 | 52.5 | 0.3997 | 0.0606 |
| -0.3 | 67.5 | 0.3829 | 0.0555 |
| -0.3 | 82.5 | 0.3668 | 0.0397 |
| -0.3 | 97.5 | 0.2599 | 0.0283 |
| -0.3 | 112.5 | 0.288 | 0.0279 |
| -0.3 | 127.5 | 0.2904 | 0.0304 |
| -0.3 | 142.5 | 0.1645 | 0.0229 |
| -0.3 | 157.5 | 0.2017 | 0.0225 |
| -0.3 | 172.5 | 0.1662 | 0.0181 |
| -0.3 | 187.5 | 0.1558 | 0.0165 |
| -0.3 | 202.5 | 0.2055 | 0.023 |
| -0.3 | 217.5 | 0.1473 | 0.022 |
| -0.3 | 232.5 | 0.2163 | 0.0253 |
| -0.3 | 247.5 | 0.3233 | 0.0298 |
| -0.3 | 262.5 | 0.3001 | 0.0292 |
| -0.3 | 277.5 | 0.2511 | 0.028 |
| -0.3 | 292.5 | 0.412 | 0.0571 |
| -0.3 | 307.5 | 0.2385 | 0.0471 |
| -0.3 | 322.5 | 0.2145 | 0.0648 |
| -0.3 | 352.5 | 0.0902 | 0.0268 |
| -0.1 | 22.5 | 0.3312 | 0.0559 |
| -0.1 | 37.5 | 0.2963 | 0.0507 |
| -0.1 | 52.5 | 0.3525 | 0.1276 |
| -0.1 | 67.5 | 0.607 | 0.0765 |
| -0.1 | 82.5 | 0.4703 | 0.0449 |
| -0.1 | 112.5 | 0.4459 | 0.0438 |
| -0.1 | 127.5 | 0.4026 | 0.0481 |
| -0.1 | 142.5 | 0.3151 | 0.0377 |
| -0.1 | 157.5 | 0.314 | 0.0338 |
| -0.1 | 172.5 | 0.2491 | 0.0209 |
| -0.1 | 187.5 | 0.2436 | 0.0209 |
| -0.1 | 202.5 | 0.4061 | 0.0364 |
| -0.1 | 217.5 | 0.3164 | 0.0384 |
| -0.1 | 247.5 | 0.3517 | 0.0333 |
| -0.1 | 262.5 | 0.3683 | 0.0323 |
| -0.1 | 277.5 | 0.5568 | 0.0519 |
| -0.1 | 292.5 | 0.4372 | 0.0759 |
| 0.1 | 7.5 | 0.1499 | 0.06 |
| 0.1 | 22.5 | 0.1522 | 0.0367 |
| 0.1 | 37.5 | 0.3239 | 0.0777 |
| 0.1 | 52.5 | 0.462 | 0.0956 |
| 0.1 | 67.5 | 0.8026 | 0.1224 |
| 0.1 | 82.5 | 0.5969 | 0.1008 |
| 0.1 | 97.5 | 0.7281 | 0.0658 |
| 0.1 | 112.5 | 0.3733 | 0.0501 |
| 0.1 | 127.5 | 0.4234 | 0.0641 |
| 0.1 | 142.5 | 0.2643 | 0.0387 |
| 0.1 | 157.5 | 0.3037 | 0.0344 |
| 0.1 | 172.5 | 0.1937 | 0.0197 |
| 0.1 | 187.5 | 0.1357 | 0.0162 |
| 0.1 | 202.5 | 0.2619 | 0.031 |
| 0.1 | 217.5 | 0.3395 | 0.048 |
| 0.1 | 232.5 | 0.4173 | 0.0601 |
| 0.1 | 247.5 | 0.333 | 0.0465 |
| 0.1 | 262.5 | 0.4928 | 0.0697 |
| 0.1 | 277.5 | 0.6769 | 0.1143 |
| 0.1 | 292.5 | 0.495 | 0.1205 |
| 0.1 | 307.5 | 0.2834 | 0.0891 |
| 0.1 | 322.5 | 0.422 | 0.1673 |
| 0.1 | 337.5 | 0.2575 | 0.0941 |
| 0.3 | 22.5 | 0.2106 | 0.0706 |
| 0.3 | 37.5 | 0.3072 | 0.0596 |
| 0.3 | 52.5 | 0.4018 | 0.0618 |
| 0.3 | 67.5 | 0.5423 | 0.0861 |
| 0.3 | 82.5 | 0.6219 | 0.1049 |
| 0.3 | 97.5 | 0.5582 | 0.0757 |
| 0.3 | 112.5 | 0.5927 | 0.0827 |
| 0.3 | 127.5 | 0.5947 | 0.0784 |
| 0.3 | 142.5 | 0.4062 | 0.0465 |
| 0.3 | 157.5 | 0.3639 | 0.0393 |
| 0.3 | 172.5 | 0.3461 | 0.0334 |
| 0.3 | 187.5 | 0.2866 | 0.0288 |
| 0.3 | 202.5 | 0.445 | 0.0433 |
| 0.3 | 217.5 | 0.3665 | 0.0425 |
| 0.3 | 232.5 | 0.5729 | 0.0812 |
| 0.3 | 247.5 | 0.4575 | 0.0601 |
| 0.3 | 262.5 | 0.6539 | 0.0936 |
| 0.3 | 277.5 | 0.9065 | 0.1729 |
| 0.3 | 292.5 | 0.5269 | 0.1096 |
| 0.3 | 307.5 | 0.4214 | 0.1006 |
| 0.3 | 322.5 | 0.4558 | 0.0986 |
| 0.3 | 337.5 | 0.3236 | 0.1339 |
| 0.5 | 22.5 | 0.1505 | 0.0241 |
| 0.5 | 37.5 | 0.1803 | 0.0238 |
| 0.5 | 52.5 | 0.3352 | 0.0369 |
| 0.5 | 67.5 | 0.547 | 0.0564 |
| 0.5 | 82.5 | 0.6368 | 0.0753 |
| 0.5 | 97.5 | 0.5564 | 0.1115 |
| 0.5 | 112.5 | 0.4959 | 0.1295 |
| 0.5 | 127.5 | 0.4118 | 0.06 |
| 0.5 | 142.5 | 0.2691 | 0.0305 |
| 0.5 | 157.5 | 0.2662 | 0.027 |
| 0.5 | 172.5 | 0.3555 | 0.0304 |
| 0.5 | 187.5 | 0.2971 | 0.0267 |
| 0.5 | 202.5 | 0.2974 | 0.0294 |
| 0.5 | 217.5 | 0.2524 | 0.0293 |
| 0.5 | 232.5 | 0.5514 | 0.0763 |
| 0.5 | 247.5 | 0.6655 | 0.1775 |
| 0.5 | 262.5 | 0.6399 | 0.1464 |
| 0.5 | 277.5 | 0.7619 | 0.1312 |
| 0.5 | 292.5 | 0.3949 | 0.0678 |
| 0.5 | 307.5 | 0.4385 | 0.0614 |
| 0.5 | 322.5 | 0.1807 | 0.0308 |
| 0.5 | 337.5 | 0.1701 | 0.033 |
| 0.7 | 7.5 | 0.3319 | 0.0485 |
| 0.7 | 22.5 | 0.3004 | 0.0601 |
| 0.7 | 37.5 | 0.3361 | 0.0477 |
| 0.7 | 52.5 | 0.4294 | 0.043 |
| 0.7 | 67.5 | 0.7517 | 0.0587 |
| 0.7 | 82.5 | 0.9446 | 0.1064 |
| 0.7 | 97.5 | 1.4604 | 0.1744 |
| 0.7 | 112.5 | 1.3871 | 0.1821 |
| 0.7 | 127.5 | 1.1761 | 0.1514 |
| 0.7 | 142.5 | 0.9826 | 0.1045 |
| 0.7 | 157.5 | 0.7781 | 0.0817 |
| 0.7 | 172.5 | 0.9113 | 0.1134 |
| 0.7 | 187.5 | 0.8332 | 0.0847 |
| 0.7 | 202.5 | 0.9632 | 0.0981 |
| 0.7 | 217.5 | 0.7667 | 0.0915 |
| 0.7 | 232.5 | 1.0225 | 0.1304 |
| 0.7 | 247.5 | 0.8314 | 0.1401 |
| 0.7 | 262.5 | 1.4695 | 0.2324 |
| 0.7 | 277.5 | 1.0425 | 0.1521 |
| 0.7 | 292.5 | 0.5522 | 0.0669 |
| 0.7 | 307.5 | 0.4638 | 0.0511 |
| 0.7 | 322.5 | 0.3443 | 0.0585 |
| 0.7 | 337.5 | 0.2933 | 0.0707 |
| 0.7 | 352.5 | 0.282 | 0.0433 |
| 0.9 | 7.5 | 0.7491 | 0.0532 |
| 0.9 | 22.5 | 0.7297 | 0.0536 |
| 0.9 | 37.5 | 0.541 | 0.0436 |
| 0.9 | 52.5 | 0.4763 | 0.0406 |
| 0.9 | 67.5 | 0.6175 | 0.0486 |
| 0.9 | 82.5 | 0.6677 | 0.0504 |
| 0.9 | 97.5 | 0.6777 | 0.0513 |
| 0.9 | 112.5 | 0.6455 | 0.0498 |
| 0.9 | 127.5 | 0.6977 | 0.0521 |
| 0.9 | 142.5 | 0.7809 | 0.0607 |
| 0.9 | 157.5 | 0.9132 | 0.0671 |
| 0.9 | 172.5 | 0.9086 | 0.0666 |
| 0.9 | 187.5 | 0.6755 | 0.0522 |
| 0.9 | 202.5 | 0.7557 | 0.059 |
| 0.9 | 217.5 | 0.9902 | 0.0736 |
| 0.9 | 232.5 | 0.7042 | 0.054 |
| 0.9 | 247.5 | 0.8372 | 0.0612 |
| 0.9 | 262.5 | 0.8651 | 0.0652 |
| 0.9 | 277.5 | 0.6541 | 0.0521 |
| 0.9 | 292.5 | 0.6504 | 0.0508 |
| 0.9 | 307.5 | 0.511 | 0.0434 |
| 0.9 | 322.5 | 0.5621 | 0.0456 |
| 0.9 | 337.5 | 0.6379 | 0.0516 |
| 0.9 | 352.5 | 0.5995 | 0.0451 |
Experiment comment: