Measurement E141M42
| 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: | 2.2 GeV2 | |
| W: | 1.78 GeV | |
| Ebeam: | 5.499 GeV | |
| Publication: | ||
| cos(θ) | φ, [degree] | dσ/dΩ, [μb/rad] | uncertainty |
|---|---|---|---|
| -0.9 | 7.5 | 0.1128 | 0.0292 |
| -0.9 | 22.5 | 0.1211 | 0.03 |
| -0.9 | 37.5 | 0.0667 | 0.0208 |
| -0.9 | 52.5 | 0.1687 | 0.0426 |
| -0.9 | 67.5 | 0.0623 | 0.0196 |
| -0.9 | 82.5 | 0.1706 | 0.0453 |
| -0.9 | 97.5 | 0.1223 | 0.0365 |
| -0.9 | 112.5 | 0.1343 | 0.034 |
| -0.9 | 127.5 | 0.2373 | 0.0632 |
| -0.9 | 142.5 | 0.1278 | 0.0441 |
| -0.9 | 172.5 | 0.15 | 0.0437 |
| -0.9 | 187.5 | 0.0881 | 0.0288 |
| -0.9 | 202.5 | 0.1381 | 0.0483 |
| -0.9 | 217.5 | 0.1039 | 0.0326 |
| -0.9 | 232.5 | 0.2005 | 0.0474 |
| -0.9 | 247.5 | 0.0561 | 0.0247 |
| -0.9 | 262.5 | 0.074 | 0.0245 |
| -0.9 | 277.5 | 0.223 | 0.0514 |
| -0.9 | 292.5 | 0.2095 | 0.0437 |
| -0.9 | 307.5 | 0.1232 | 0.0281 |
| -0.9 | 322.5 | 0.1335 | 0.035 |
| -0.9 | 337.5 | 0.0877 | 0.0275 |
| -0.9 | 352.5 | 0.065 | 0.0198 |
| -0.7 | 7.5 | 0.0664 | 0.0141 |
| -0.7 | 22.5 | 0.0657 | 0.016 |
| -0.7 | 37.5 | 0.086 | 0.0178 |
| -0.7 | 52.5 | 0.0814 | 0.016 |
| -0.7 | 67.5 | 0.0474 | 0.0125 |
| -0.7 | 82.5 | 0.0838 | 0.0176 |
| -0.7 | 97.5 | 0.098 | 0.0283 |
| -0.7 | 112.5 | 0.085 | 0.0201 |
| -0.7 | 127.5 | 0.0778 | 0.0157 |
| -0.7 | 142.5 | 0.0951 | 0.0217 |
| -0.7 | 157.5 | 0.0714 | 0.0168 |
| -0.7 | 172.5 | 0.0475 | 0.0118 |
| -0.7 | 187.5 | 0.0838 | 0.0168 |
| -0.7 | 202.5 | 0.0504 | 0.0129 |
| -0.7 | 217.5 | 0.0568 | 0.0159 |
| -0.7 | 232.5 | 0.0999 | 0.0194 |
| -0.7 | 247.5 | 0.0974 | 0.0267 |
| -0.7 | 262.5 | 0.1211 | 0.0266 |
| -0.7 | 277.5 | 0.0795 | 0.0193 |
| -0.7 | 292.5 | 0.0844 | 0.0152 |
| -0.7 | 307.5 | 0.072 | 0.0138 |
| -0.7 | 322.5 | 0.064 | 0.0144 |
| -0.7 | 337.5 | 0.0964 | 0.0308 |
| -0.7 | 352.5 | 0.0937 | 0.0235 |
| -0.5 | 7.5 | 0.0889 | 0.0227 |
| -0.5 | 22.5 | 0.1311 | 0.036 |
| -0.5 | 37.5 | 0.0652 | 0.0175 |
| -0.5 | 52.5 | 0.1369 | 0.0199 |
| -0.5 | 67.5 | 0.132 | 0.0289 |
| -0.5 | 82.5 | 0.1059 | 0.0193 |
| -0.5 | 97.5 | 0.129 | 0.0216 |
| -0.5 | 112.5 | 0.0976 | 0.0151 |
| -0.5 | 127.5 | 0.1068 | 0.0174 |
| -0.5 | 142.5 | 0.1272 | 0.0206 |
| -0.5 | 157.5 | 0.0731 | 0.0141 |
| -0.5 | 172.5 | 0.0633 | 0.012 |
| -0.5 | 187.5 | 0.0975 | 0.0156 |
| -0.5 | 202.5 | 0.0516 | 0.0107 |
| -0.5 | 217.5 | 0.0478 | 0.0108 |
| -0.5 | 232.5 | 0.074 | 0.0134 |
| -0.5 | 247.5 | 0.11 | 0.0163 |
| -0.5 | 262.5 | 0.1131 | 0.0181 |
| -0.5 | 277.5 | 0.1373 | 0.0227 |
| -0.5 | 292.5 | 0.0924 | 0.0166 |
| -0.5 | 307.5 | 0.1082 | 0.0182 |
| -0.5 | 322.5 | 0.0787 | 0.0199 |
| -0.5 | 337.5 | 0.1394 | 0.0518 |
| -0.5 | 352.5 | 0.1001 | 0.0271 |
| -0.3 | 7.5 | 0.0616 | 0.0262 |
| -0.3 | 22.5 | 0.1281 | 0.0467 |
| -0.3 | 37.5 | 0.1514 | 0.0359 |
| -0.3 | 52.5 | 0.176 | 0.0422 |
| -0.3 | 67.5 | 0.2672 | 0.0529 |
| -0.3 | 82.5 | 0.2127 | 0.0284 |
| -0.3 | 97.5 | 0.2205 | 0.0301 |
| -0.3 | 112.5 | 0.2259 | 0.0271 |
| -0.3 | 127.5 | 0.1371 | 0.0184 |
| -0.3 | 142.5 | 0.1159 | 0.0207 |
| -0.3 | 157.5 | 0.133 | 0.0181 |
| -0.3 | 172.5 | 0.1004 | 0.0136 |
| -0.3 | 187.5 | 0.1212 | 0.0151 |
| -0.3 | 202.5 | 0.113 | 0.0163 |
| -0.3 | 217.5 | 0.083 | 0.0146 |
| -0.3 | 232.5 | 0.1178 | 0.017 |
| -0.3 | 247.5 | 0.1779 | 0.0214 |
| -0.3 | 262.5 | 0.177 | 0.0226 |
| -0.3 | 277.5 | 0.1945 | 0.0267 |
| -0.3 | 292.5 | 0.1227 | 0.0311 |
| -0.3 | 307.5 | 0.1841 | 0.0623 |
| -0.1 | 22.5 | 0.0852 | 0.0266 |
| -0.1 | 37.5 | 0.1931 | 0.0403 |
| -0.1 | 52.5 | 0.2188 | 0.054 |
| -0.1 | 67.5 | 0.3415 | 0.0631 |
| -0.1 | 82.5 | 0.3899 | 0.0488 |
| -0.1 | 97.5 | 0.2482 | 0.0273 |
| -0.1 | 112.5 | 0.1875 | 0.027 |
| -0.1 | 127.5 | 0.2968 | 0.0438 |
| -0.1 | 142.5 | 0.1443 | 0.0244 |
| -0.1 | 157.5 | 0.238 | 0.0281 |
| -0.1 | 172.5 | 0.1666 | 0.0178 |
| -0.1 | 187.5 | 0.1526 | 0.0163 |
| -0.1 | 202.5 | 0.2313 | 0.0269 |
| -0.1 | 217.5 | 0.1438 | 0.0217 |
| -0.1 | 232.5 | 0.2589 | 0.0344 |
| -0.1 | 247.5 | 0.1942 | 0.0254 |
| -0.1 | 262.5 | 0.2548 | 0.0241 |
| -0.1 | 277.5 | 0.3354 | 0.0451 |
| -0.1 | 292.5 | 0.1939 | 0.0494 |
| 0.1 | 22.5 | 0.1457 | 0.0504 |
| 0.1 | 37.5 | 0.1998 | 0.0695 |
| 0.1 | 52.5 | 0.138 | 0.0449 |
| 0.1 | 67.5 | 0.4109 | 0.0854 |
| 0.1 | 82.5 | 0.4117 | 0.0996 |
| 0.1 | 97.5 | 0.2114 | 0.04 |
| 0.1 | 112.5 | 0.3303 | 0.0473 |
| 0.1 | 127.5 | 0.2242 | 0.0413 |
| 0.1 | 142.5 | 0.2744 | 0.0447 |
| 0.1 | 157.5 | 0.1517 | 0.0273 |
| 0.1 | 172.5 | 0.1016 | 0.0159 |
| 0.1 | 187.5 | 0.1414 | 0.0188 |
| 0.1 | 202.5 | 0.256 | 0.0358 |
| 0.1 | 217.5 | 0.1283 | 0.0294 |
| 0.1 | 232.5 | 0.1908 | 0.0379 |
| 0.1 | 247.5 | 0.1532 | 0.0304 |
| 0.1 | 262.5 | 0.2171 | 0.0442 |
| 0.1 | 277.5 | 0.4732 | 0.121 |
| 0.1 | 292.5 | 0.4948 | 0.1365 |
| 0.1 | 307.5 | 0.3138 | 0.1051 |
| 0.3 | 22.5 | 0.0912 | 0.0424 |
| 0.3 | 37.5 | 0.1916 | 0.0536 |
| 0.3 | 52.5 | 0.2442 | 0.0479 |
| 0.3 | 67.5 | 0.1901 | 0.0408 |
| 0.3 | 82.5 | 0.3834 | 0.0661 |
| 0.3 | 97.5 | 0.3772 | 0.0723 |
| 0.3 | 112.5 | 0.3151 | 0.0602 |
| 0.3 | 127.5 | 0.3082 | 0.0357 |
| 0.3 | 142.5 | 0.2334 | 0.0266 |
| 0.3 | 157.5 | 0.2891 | 0.0354 |
| 0.3 | 172.5 | 0.1976 | 0.0232 |
| 0.3 | 187.5 | 0.2158 | 0.0236 |
| 0.3 | 202.5 | 0.1745 | 0.0279 |
| 0.3 | 217.5 | 0.1751 | 0.0304 |
| 0.3 | 232.5 | 0.1561 | 0.0369 |
| 0.3 | 247.5 | 0.2247 | 0.0557 |
| 0.3 | 262.5 | 0.333 | 0.0848 |
| 0.3 | 277.5 | 0.4435 | 0.1044 |
| 0.3 | 292.5 | 0.2163 | 0.0524 |
| 0.3 | 307.5 | 0.148 | 0.051 |
| 0.3 | 322.5 | 0.261 | 0.0721 |
| 0.5 | 22.5 | 0.1007 | 0.0216 |
| 0.5 | 37.5 | 0.1816 | 0.0293 |
| 0.5 | 52.5 | 0.3321 | 0.0515 |
| 0.5 | 67.5 | 0.3627 | 0.0548 |
| 0.5 | 82.5 | 0.2361 | 0.0503 |
| 0.5 | 97.5 | 0.401 | 0.0781 |
| 0.5 | 112.5 | 0.5088 | 0.1115 |
| 0.5 | 127.5 | 0.4636 | 0.0861 |
| 0.5 | 142.5 | 0.282 | 0.0479 |
| 0.5 | 157.5 | 0.271 | 0.0377 |
| 0.5 | 172.5 | 0.2254 | 0.0275 |
| 0.5 | 187.5 | 0.2135 | 0.0279 |
| 0.5 | 202.5 | 0.3067 | 0.0416 |
| 0.5 | 217.5 | 0.3186 | 0.0552 |
| 0.5 | 232.5 | 0.372 | 0.1037 |
| 0.5 | 247.5 | 0.3498 | 0.1036 |
| 0.5 | 262.5 | 0.2592 | 0.092 |
| 0.5 | 277.5 | 0.3579 | 0.0906 |
| 0.5 | 292.5 | 0.2027 | 0.0481 |
| 0.5 | 307.5 | 0.3044 | 0.0663 |
| 0.5 | 322.5 | 0.2754 | 0.0548 |
| 0.5 | 337.5 | 0.1257 | 0.038 |
| 0.7 | 7.5 | 0.1818 | 0.0341 |
| 0.7 | 22.5 | 0.1868 | 0.0419 |
| 0.7 | 37.5 | 0.2237 | 0.0448 |
| 0.7 | 52.5 | 0.3288 | 0.0768 |
| 0.7 | 67.5 | 0.5531 | 0.0847 |
| 0.7 | 82.5 | 0.4511 | 0.0714 |
| 0.7 | 97.5 | 0.8094 | 0.1444 |
| 0.7 | 112.5 | 0.6398 | 0.1185 |
| 0.7 | 127.5 | 0.5048 | 0.0961 |
| 0.7 | 142.5 | 0.5504 | 0.0989 |
| 0.7 | 157.5 | 0.5739 | 0.0924 |
| 0.7 | 172.5 | 0.588 | 0.1217 |
| 0.7 | 187.5 | 0.4982 | 0.074 |
| 0.7 | 202.5 | 0.5876 | 0.0825 |
| 0.7 | 217.5 | 0.6583 | 0.1127 |
| 0.7 | 232.5 | 0.6874 | 0.1883 |
| 0.7 | 247.5 | 0.7051 | 0.1747 |
| 0.7 | 262.5 | 0.6173 | 0.1283 |
| 0.7 | 277.5 | 0.3756 | 0.0814 |
| 0.7 | 292.5 | 0.3352 | 0.0883 |
| 0.7 | 307.5 | 0.5182 | 0.118 |
| 0.7 | 322.5 | 0.1588 | 0.0415 |
| 0.7 | 337.5 | 0.1409 | 0.0363 |
| 0.7 | 352.5 | 0.1349 | 0.0266 |
| 0.9 | 7.5 | 0.2451 | 0.0267 |
| 0.9 | 22.5 | 0.2219 | 0.0259 |
| 0.9 | 37.5 | 0.2942 | 0.034 |
| 0.9 | 52.5 | 0.4115 | 0.0497 |
| 0.9 | 67.5 | 0.4583 | 0.0525 |
| 0.9 | 82.5 | 0.4277 | 0.0458 |
| 0.9 | 97.5 | 0.5557 | 0.0619 |
| 0.9 | 112.5 | 0.7489 | 0.084 |
| 0.9 | 127.5 | 0.4962 | 0.0542 |
| 0.9 | 142.5 | 0.5419 | 0.0615 |
| 0.9 | 157.5 | 0.5853 | 0.0608 |
| 0.9 | 172.5 | 0.5404 | 0.0604 |
| 0.9 | 187.5 | 0.5772 | 0.0627 |
| 0.9 | 202.5 | 0.6669 | 0.0705 |
| 0.9 | 217.5 | 0.4603 | 0.0553 |
| 0.9 | 232.5 | 0.557 | 0.0638 |
| 0.9 | 247.5 | 0.6141 | 0.0973 |
| 0.9 | 262.5 | 0.6862 | 0.0734 |
| 0.9 | 277.5 | 0.5287 | 0.0567 |
| 0.9 | 292.5 | 0.4627 | 0.0545 |
| 0.9 | 307.5 | 0.3774 | 0.0466 |
| 0.9 | 322.5 | 0.3177 | 0.0381 |
| 0.9 | 337.5 | 0.2516 | 0.0271 |
| 0.9 | 352.5 | 0.2697 | 0.0276 |
Experiment comment: