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Measurement E8M20

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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 : 1.48 — 1.5 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 12.9 1.188 0.9382
7.5 45 11.51 1.279 0.9309
7.5 75 10.59 1.154 0.9141
7.5 105 8.932 0.8629 0.8677
7.5 135 7.246 0.7171 0.8085
7.5 165 7.876 0.7312 0.8444
7.5 195 7.936 0.7626 0.8618
7.5 225 8.944 0.8303 0.8548
7.5 255 10.6 1.06 0.9384
7.5 285 10.76 1.333 0.8715
7.5 315 13.73 1.795 0.9359
7.5 345 12.9 1.207 0.9587
22.5 75 8.386 1.134 0.8146
22.5 105 6.922 1.022 0.7665
22.5 135 7.229 0.6047 0.7816
22.5 165 4.939 0.4002 0.7337
22.5 195 4.625 0.3546 0.7303
22.5 225 5.706 0.5037 0.7431
22.5 255 9.499 1.454 0.8119
22.5 285 8.743 1.709 0.7984
37.5 75 9.379 0.4025 0.8117
37.5 105 11.17 0.9902 0.8318
37.5 255 8.801 0.6607 0.8044
37.5 285 9.946 0.4031 0.8138
52.5 45 6.328 0.6412 0.4804
52.5 75 9.019 0.4102 0.5643
52.5 165 3.529 0.2027 0.4408
52.5 195 3.389 0.2016 0.436
52.5 285 8.403 0.4055 0.5491
52.5 315 5.706 0.6535 0.4656
67.5 15 3.17 0.5213 0.4141
67.5 45 5.852 0.3819 0.4655
67.5 105 8.447 0.4414 0.5447
67.5 135 5.132 0.2983 0.4565
67.5 165 2.98 0.1554 0.4178
67.5 195 3.216 0.168 0.4245
67.5 225 6.167 0.4003 0.4882
67.5 255 8.172 0.3512 0.5325
67.5 315 5.69 0.3684 0.4701
67.5 345 4.571 1.389 0.4546
82.5 45 4.989 0.8007 0.4161
82.5 75 7.174 0.4258 0.4878
82.5 105 7.454 0.2776 0.4935
82.5 135 5.579 0.3278 0.444
82.5 165 2.51 0.1512 0.389
82.5 195 2.67 0.1569 0.3925
82.5 225 4.955 0.316 0.4374
82.5 255 7.356 0.2737 0.4959
82.5 285 7.54 0.4506 0.5007
82.5 315 4.561 0.5454 0.4177
82.5 345 3.909 1.413 0.4005
97.5 15 1.894 0.2654 0.3015
97.5 45 3.895 0.2141 0.3327
97.5 75 5.761 0.349 0.3944
97.5 105 6.004 0.2545 0.3986
97.5 135 4.256 0.2846 0.3577
97.5 165 2.759 0.1999 0.3239
97.5 195 2.989 0.225 0.3268
97.5 225 4.784 0.3392 0.3668
97.5 255 6.499 0.2742 0.4239
97.5 285 5.583 0.3408 0.3894
97.5 315 4.153 0.2219 0.3473
97.5 345 1.637 0.2172 0.2992
112.5 15 1.436 0.1738 0.2524
112.5 45 3.205 0.2109 0.2801
112.5 75 5.501 0.371 0.3504
112.5 105 5.132 0.2839 0.3466
112.5 135 3.844 0.245 0.3152
112.5 165 2.171 0.1676 0.2696
112.5 195 2.467 0.1994 0.28
112.5 225 4.2 0.2827 0.3213
112.5 255 5.503 0.2659 0.363
112.5 285 4.996 0.3587 0.3339
112.5 315 3.282 0.2325 0.2886
112.5 345 1.048 0.1356 0.2489
127.5 15 0.9068 0.1218 0.2019
127.5 45 2.44 0.2038 0.2309
127.5 75 3.737 0.2677 0.2644
127.5 105 3.71 0.2884 0.2742
127.5 135 3.108 0.3226 0.2659
127.5 165 2.345 0.4025 0.2394
127.5 195 1.976 0.4067 0.2224
127.5 225 3.474 0.4179 0.2527
127.5 255 3.616 0.2532 0.2621
127.5 285 3.741 0.2734 0.2624
127.5 315 2.479 0.2194 0.2238
127.5 345 1.057 0.1361 0.204
142.5 15 0.7624 0.1147 0.1249
142.5 45 1.862 0.2357 0.2075
142.5 75 2.801 0.2713 0.2189
142.5 105 3.407 0.7007 0.2668
142.5 135 2.829 0.6935 0.1254
142.5 255 2.486 0.4564 0.249
142.5 285 2.691 0.2864 0.2207
142.5 315 1.583 0.2289 0.1999
142.5 345 0.9598 0.1391 0.1915
157.5 15 1.097 0.2906 0.1044
157.5 345 1.029 0.3339 0.1034