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Measurement E8M12

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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 : 1.32 — 1.34 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 18.88 1.524 2.159
7.5 45 18.13 1.716 2.112
7.5 75 21.32 2.29 2.194
7.5 105 19.16 1.984 2.161
7.5 135 25.41 7.329 2.426
7.5 225 38.71 9.88 2.33
7.5 255 20.18 2.406 2.246
7.5 285 16.62 1.907 2.139
7.5 315 14.19 1.335 2.121
7.5 345 20.16 1.745 2.262
22.5 15 14.1 1.47 1.227
22.5 45 19.62 5.677 1.256
22.5 165 11.65 1.032 1.143
22.5 195 9.778 0.8074 1.148
22.5 345 16.55 2.257 1.257
37.5 45 11.56 1.621 0.8969
37.5 135 10.27 0.6103 0.88
37.5 165 7.524 0.3438 0.8259
37.5 195 7.928 0.352 0.8226
37.5 225 10.26 0.5611 0.88
37.5 315 10.2 0.8721 0.8678
52.5 45 8.359 0.8101 0.7278
52.5 75 10.26 1.469 0.7679
52.5 105 11.48 0.5743 0.7954
52.5 135 8.695 0.6342 0.7356
52.5 165 6.024 0.2711 0.6888
52.5 195 5.757 0.2598 0.6815
52.5 225 9.207 0.7246 0.7422
52.5 255 10.76 0.4904 0.7745
52.5 285 10.41 1.492 0.7685
52.5 315 8.934 0.8453 0.7269
67.5 45 5.398 1.427 0.5026
67.5 75 7.697 0.4355 0.5718
67.5 105 8.435 0.3319 0.5961
67.5 135 7.582 0.5831 0.554
67.5 165 4.898 0.2662 0.5081
67.5 195 4.466 0.2435 0.505
67.5 225 6.911 0.5232 0.5586
67.5 255 8.43 0.3445 0.5852
67.5 285 8.579 0.6235 0.596
67.5 315 5.947 1.108 0.5388
82.5 45 3.665 0.3804 0.4063
82.5 75 6.21 0.4019 0.4583
82.5 105 6.49 0.2771 0.4668
82.5 135 5.321 0.4305 0.4312
82.5 165 3.356 0.2134 0.3901
82.5 195 3.896 0.2417 0.4013
82.5 225 5.605 0.5255 0.439
82.5 255 7.02 0.2973 0.4865
82.5 285 6.727 0.3661 0.4621
82.5 315 4.691 0.5311 0.4135
97.5 15 2.608 1.095 0.3195
97.5 45 2.851 0.1859 0.3331
97.5 75 4.767 0.4173 0.387
97.5 105 5.14 0.2593 0.3934
97.5 135 4.499 0.32 0.3774
97.5 165 2.822 0.1831 0.3332
97.5 195 3.49 0.2199 0.3444
97.5 225 4.201 0.3069 0.3732
97.5 255 5.225 0.2571 0.3906
97.5 285 5.023 0.4179 0.3859
97.5 315 2.809 0.1779 0.3317
97.5 345 1.511 0.3066 0.3085
112.5 15 1.223 0.1786 0.2423
112.5 45 2.264 0.1758 0.267
112.5 75 3.568 0.4536 0.2963
112.5 105 3.212 0.1958 0.2857
112.5 135 3.113 0.375 0.2899
112.5 165 2.329 0.2437 0.2691
112.5 195 2.753 0.3548 0.2775
112.5 225 3.301 0.3451 0.297
112.5 255 3.546 0.1994 0.3018
112.5 285 3.546 0.3319 0.2888
112.5 315 2.096 0.1895 0.2522
112.5 345 1.436 0.6488 0.2413
127.5 15 0.7292 0.1791 0.167
127.5 45 1.285 0.1397 0.1803
127.5 75 2.261 0.1967 0.2057
127.5 105 2.233 0.2685 0.2155
127.5 135 1.641 0.1789 0.1838
127.5 225 1.857 0.2096 0.2011
127.5 255 2.457 0.3235 0.2161
127.5 285 2.113 0.2704 0.2017
127.5 315 1.18 0.1312 0.1748
127.5 345 1.288 0.8088 0.1756
142.5 15 0.5699 0.1055 0.1395
142.5 45 0.9675 0.172 0.1495
142.5 75 1.319 0.1441 0.1639
142.5 285 1.066 0.13 0.1528
142.5 315 0.9547 0.2283 0.1538
142.5 345 0.8375 0.1533 0.1545
157.5 15 0.4983 0.1211 0.1716
157.5 345 0.5588 0.1322 0.1769