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Measurement E8M8

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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 : 1.24 — 1.26 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
7.5 105 20.15 2.838 2.047
7.5 135 14.48 1.321 2.008
7.5 165 18.97 1.581 2.078
7.5 195 16.73 1.442 1.998
7.5 225 19.31 1.684 2.018
7.5 255 16.22 2.019 1.947
22.5 15 14.84 1.097 1.248
22.5 45 20.97 4.384 1.378
22.5 105 18.48 1.111 1.311
22.5 135 17.42 0.8396 1.275
22.5 165 16.99 0.7906 1.29
22.5 195 16.85 0.78 1.265
22.5 225 18.17 0.8434 1.322
22.5 255 17.48 1.104 1.29
22.5 345 15.79 1.239 1.254
37.5 105 17.61 1.958 1.364
37.5 135 17.55 0.807 1.362
37.5 165 15.12 0.609 1.297
37.5 195 15.24 0.6181 1.296
37.5 225 16.3 0.7739 1.331
37.5 255 18.1 2.99 1.353
37.5 285 22.63 4.726 1.41
52.5 45 13.41 1.481 1.13
52.5 75 17.36 0.6913 1.222
52.5 105 18.2 0.9677 1.247
52.5 135 14.85 0.8903 1.156
52.5 165 12.3 0.483 1.122
52.5 195 13.66 0.5328 1.144
52.5 225 19.71 1.752 1.286
52.5 255 17.92 1.278 1.225
52.5 285 17.41 0.6563 1.234
52.5 315 15.68 1.902 1.16
67.5 45 11.27 1.515 1.006
67.5 75 17.71 0.5704 1.144
67.5 105 19.07 0.656 1.175
67.5 135 16.64 1.419 1.116
67.5 165 11.25 0.508 1.012
67.5 195 11.19 0.514 1.012
67.5 225 15.62 1.119 1.104
67.5 255 18.82 0.6523 1.176
67.5 285 17 0.5524 1.141
67.5 315 9.176 0.9077 0.9845
82.5 45 10.69 0.9216 0.9338
82.5 75 16.42 0.6012 1.051
82.5 105 17.84 0.5922 1.106
82.5 135 13.59 0.8176 0.9963
82.5 165 10.33 0.4153 0.9346
82.5 195 9.568 0.3804 0.9227
82.5 225 14.67 1.12 1.021
82.5 255 18.16 0.5825 1.113
82.5 285 17.46 0.6489 1.08
82.5 315 10.46 0.7958 0.9329
97.5 15 7.106 0.9244 0.8047
97.5 45 10.73 0.467 0.8682
97.5 75 15.91 0.9679 0.9863
97.5 105 15.77 0.5386 1.006
97.5 135 12.94 0.9883 0.9147
97.5 165 8.338 0.4338 0.8368
97.5 195 8.675 0.4484 0.8491
97.5 225 11.33 0.6765 0.8844
97.5 255 17.26 0.5509 1.024
97.5 285 14.66 0.7984 0.9542
97.5 315 10.51 0.4466 0.8704
97.5 345 6.402 0.7353 0.7922
112.5 15 7.518 0.7226 0.7133
112.5 45 9.831 0.4411 0.7621
112.5 75 13.74 0.8521 0.8664
112.5 105 12.97 0.4934 0.8466
112.5 135 9.461 0.7462 0.7457
112.5 165 7.229 0.5927 0.7225
112.5 195 7.507 0.5901 0.7204
112.5 225 8.841 0.5916 0.7765
112.5 255 13.08 0.4667 0.8502
112.5 285 13.84 0.8056 0.8517
112.5 315 9.732 0.4691 0.7565
112.5 345 5.996 0.4863 0.6937
127.5 15 5.911 0.6104 0.6393
127.5 45 8.287 0.4236 0.6761
127.5 75 9.247 0.5594 0.7029
127.5 105 10.15 0.8558 0.7558
127.5 135 7.389 0.5378 0.6675
127.5 225 9.19 0.9214 0.69
127.5 255 9.837 0.7481 0.7144
127.5 285 10.33 0.6345 0.7382
127.5 315 9.598 0.5439 0.6973
127.5 345 5.661 0.5543 0.6231
142.5 15 5.201 0.4287 0.7862
142.5 45 6.262 0.5901 0.798
142.5 75 7.634 0.4384 0.8123
142.5 285 8.209 0.508 0.8386
142.5 315 8.34 0.8185 0.8325
142.5 345 5.678 0.5731 0.7977
157.5 15 5.479 0.5908 0.5862
157.5 315 8.469 5.404 0.3852
157.5 345 5.978 0.856 0.5745