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Measurement E8M31

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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 : 0.35 — 0.45 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 75 14.42 5.465 1.425
7.5 105 35.19 8.358 1.703
7.5 135 10.72 1.261 1.395
7.5 165 15.85 2.395 1.523
7.5 195 11.06 1.216 1.372
7.5 225 15.9 1.625 1.439
7.5 255 12.47 1.608 1.425
7.5 285 11 4.297 1.378
22.5 15 12.66 1.11 1.381
22.5 75 17.28 5.348 1.359
22.5 105 14.96 1.058 1.391
22.5 135 16.08 0.9401 1.41
22.5 165 13.24 0.774 1.368
22.5 195 13.78 0.7708 1.377
22.5 225 13.36 0.8181 1.362
22.5 255 15.6 1.133 1.411
22.5 315 10.57 2.649 1.436
22.5 345 11.63 1.291 1.375
37.5 15 7.966 1.165 0.925
37.5 75 14.04 2.112 0.9825
37.5 105 15.88 1.136 1.058
37.5 135 15.47 0.816 1.054
37.5 165 13.51 0.6233 1.032
37.5 195 12.84 0.5914 0.9961
37.5 225 14.37 0.759 1.01
37.5 255 15.68 1.136 1.064
37.5 285 14.68 1.843 1.048
37.5 315 11.85 5.237 0.9949
37.5 345 11.44 4.263 0.9954
52.5 45 11.41 1.188 1.08
52.5 75 14.15 0.6776 1.099
52.5 105 18.32 1.005 1.195
52.5 135 15.99 0.8709 1.122
52.5 165 12.26 0.529 1.056
52.5 195 13.83 0.579 1.071
52.5 225 15.37 0.8508 1.106
52.5 255 19.81 1.139 1.241
52.5 285 15.98 0.7769 1.149
52.5 315 14.68 1.985 1.103
67.5 45 12.57 1.454 1.102
67.5 75 17.58 0.6193 1.192
67.5 105 19.11 0.7836 1.245
67.5 135 16.48 0.9477 1.177
67.5 165 11.5 0.5553 1.07
67.5 195 12.36 0.5892 1.096
67.5 225 15.83 0.9148 1.17
67.5 255 17.97 0.7518 1.241
67.5 285 18.19 0.6152 1.218
67.5 315 12.93 1.408 1.094
82.5 45 10.54 0.9647 0.9662
82.5 75 18.04 0.6404 1.123
82.5 105 18.13 0.6649 1.14
82.5 135 16.21 0.9275 1.101
82.5 165 9.761 0.4343 0.9672
82.5 195 11 0.4719 0.9973
82.5 225 14.73 0.852 1.046
82.5 255 18.99 0.6429 1.156
82.5 285 18.31 0.6521 1.147
82.5 315 12.45 0.9935 1.032
97.5 15 7.164 1.011 0.8589
97.5 45 11.59 0.606 0.933
97.5 75 16.1 0.7549 1.041
97.5 105 17.98 0.6374 1.084
97.5 135 14.43 0.7156 1.002
97.5 165 9.749 0.4888 0.8962
97.5 195 8.826 0.4715 0.8965
97.5 225 15.43 0.7755 1.017
97.5 255 19.16 0.6432 1.11
97.5 285 17.56 0.8055 1.086
97.5 315 12.87 0.6248 0.9889
97.5 345 8.091 1.403 0.8738
112.5 15 8.235 0.6421 0.7957
112.5 45 12.11 0.5215 0.8529
112.5 75 15.73 0.833 0.9656
112.5 105 14.68 0.5411 0.9514
112.5 135 12.13 0.7252 0.8815
112.5 165 8.308 0.6037 0.7993
112.5 195 9.45 0.6781 0.7932
112.5 225 11.05 0.6131 0.8543
112.5 255 16.13 0.5639 0.9651
112.5 285 15.66 0.8603 0.9584
112.5 315 12.25 0.5668 0.8708
112.5 345 6.975 0.5595 0.7759
127.5 15 8.017 0.6786 0.7045
127.5 45 11.4 0.5766 0.7776
127.5 75 12.9 0.6953 0.8318
127.5 105 12 0.6962 0.7973
127.5 135 10.76 0.8837 0.7865
127.5 165 7.731 1.489 0.7304
127.5 195 7.535 1.431 0.699
127.5 225 8.33 0.5504 0.7333
127.5 255 12.95 0.6776 0.8214
127.5 285 12.9 0.72 0.8173
127.5 315 10.13 0.5873 0.7553
127.5 345 7.512 0.6497 0.6917
142.5 15 8.139 0.7291 0.7121
142.5 45 8.692 0.6387 0.74
142.5 75 8.62 0.5453 0.7262
142.5 105 9.994 1.465 0.7538
142.5 255 9.914 1.408 0.7793
142.5 285 9.783 0.6461 0.7493
142.5 315 7.821 0.6117 0.7146
142.5 345 6.346 0.5883 0.6812
157.5 15 7.958 0.9816 1.044
157.5 45 10.68 2.979 1.061
157.5 315 10.5 3.043 1.114
157.5 345 7.947 1.183 1.06