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Measurement E8M7

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Experiment: E89-038 CLAS experiment, 1999

Spokespersons: V. Burkert, R. Minehart

Experiment comment: Beam energy 1.515 GeV. Global 5.8% scaling systematic uncertainty for all data points

Measurement comment: Global 5.8% scaling systematic uncertainty

Publication:

Quantity measured: dσ/dΩ, mcbn/sterad
Differential cross section.
Beam: e, polarization: none
Target: p (Z=1, A=1), polarization: none
Final state: π+n, polarization: none

Q2 : 0.25 — 0.35 GeV2
W : 1.22 — 1.24 GeV
Ebeam : 1.515 GeV

Select data slice:
θπ = deg

Fit φ dependence:

 Observable quantity measured (Y axis): dσ/dΩ, mcbn/sterad
Plot measurement data

Parameter (X axis): φπ, deg

Click here to get data in text file, delimited with tabs.

Click here to get calculated fit coefficients in text file, delimited with tabs.

Measured data:

θπ,
deg 		φπ,
deg 		dσ/dΩ,
mcbn/sterad 		Data errors,
mcbn/sterad 		Systematic errors,
mcbn/sterad
7.5 15 13.7 4.918 1.442
7.5 45 14.29 4.495 1.275
7.5 75 18.08 2.011 1.316
7.5 105 13.89 1.196 1.289
7.5 135 16.53 1.584 1.358
7.5 165 18.29 1.616 1.489
7.5 195 15.93 1.374 1.304
7.5 225 20.63 1.958 1.366
7.5 255 13.46 1.216 1.271
7.5 285 10.56 1.373 1.211
7.5 315 14 3.562 1.306
22.5 15 13.35 1.503 1.426
22.5 75 15.6 2.399 1.476
22.5 105 18.32 1.103 1.493
22.5 135 16.81 0.8262 1.47
22.5 165 17.88 0.8334 1.521
22.5 195 17.08 0.8412 1.498
22.5 225 17.23 0.8292 1.495
22.5 255 18.81 1.166 1.515
22.5 285 15.24 2.293 1.422
22.5 345 15.27 2.693 1.421
37.5 75 12.32 1.743 1.175
37.5 105 24 2.539 1.408
37.5 135 19.42 0.8547 1.292
37.5 165 16.31 0.677 1.24
37.5 195 16.6 0.6638 1.263
37.5 225 17.61 0.7975 1.267
37.5 255 19.29 2.101 1.34
37.5 285 13.54 1.622 1.21
52.5 45 14.17 1.297 1.279
52.5 75 18.97 0.6893 1.343
52.5 105 22.42 1.406 1.44
52.5 135 19.04 1.448 1.351
52.5 165 15.31 0.6064 1.295
52.5 195 14.55 0.5717 1.281
52.5 225 21.34 1.872 1.416
52.5 255 20.41 1.131 1.4
52.5 285 19 0.6548 1.371
52.5 315 12.99 1.484 1.259
67.5 45 11.44 0.9096 1.273
67.5 75 20.58 0.6351 1.437
67.5 105 23.71 0.7916 1.503
67.5 135 21.67 1.975 1.439
67.5 165 14.27 0.6052 1.305
67.5 195 13.82 0.5922 1.305
67.5 225 21.72 1.393 1.439
67.5 255 22.46 0.7434 1.477
67.5 285 21.68 0.6812 1.454
82.5 45 12.9 1.084 1.188
82.5 75 21.2 0.702 1.375
82.5 105 23.18 0.7289 1.399
82.5 135 18.91 1.082 1.346
82.5 165 11.9 0.4466 1.182
82.5 195 12.54 0.4596 1.197
82.5 225 18.08 1.186 1.284
82.5 255 24.34 0.7312 1.463
82.5 285 20.75 0.6848 1.365
82.5 315 15.92 1.292 1.235
97.5 15 9.572 1.167 1.072
97.5 45 15.33 0.6429 1.174
97.5 75 20 1.047 1.276
97.5 105 20.69 0.6423 1.304
97.5 135 17.62 0.9821 1.246
97.5 165 10.32 0.5131 1.086
97.5 195 10.8 0.5711 1.087
97.5 225 16.66 0.8832 1.227
97.5 255 22.84 0.6769 1.352
97.5 285 22.94 1.288 1.345
97.5 315 14.6 0.5841 1.154
97.5 345 8.624 0.7629 1.06
112.5 15 8.933 0.911 0.9384
112.5 45 13.53 0.5369 1.035
112.5 75 19.43 0.9926 1.161
112.5 105 18.22 0.6204 1.138
112.5 135 14.7 0.9907 1.041
112.5 165 9.451 0.8953 0.9662
112.5 195 9.573 0.896 0.9578
112.5 225 15.75 1.649 1.1
112.5 255 17.77 0.5754 1.131
112.5 285 18.33 1.028 1.139
112.5 315 13.89 0.607 1.026
112.5 345 8.119 0.5935 0.9379
127.5 15 8.617 0.8038 0.8515
127.5 45 12.27 0.5691 0.9317
127.5 75 15.05 0.7634 0.9928
127.5 105 14.57 0.9142 0.9851
127.5 135 12.25 0.8332 0.936
127.5 225 10.6 0.7544 0.9645
127.5 255 15.62 0.9967 1.023
127.5 285 15.22 0.8002 1.021
127.5 315 12.03 0.587 0.9257
127.5 345 9.261 0.9271 0.8473
142.5 15 8.241 0.6542 0.7359
142.5 45 8.957 0.9969 0.7987
142.5 75 11.85 0.5907 0.8316
142.5 285 13.23 0.6961 0.8439
142.5 315 11.41 1.196 0.8073
142.5 345 7.475 0.587 0.7355
157.5 15 7.863 0.7716 0.7505
157.5 45 8.111 2.295 0.4633
157.5 345 7.99 0.7771 0.7198