CLAS Physics Database

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Measurement E8M69

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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:

under preparation //

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 :	0.55 — 0.65 GeV²
W :	1.1 — 1.12 GeV
E_beam :	1.515 GeV

Select data slice:
θ_π = deg

Fit φ dependence:

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

Parameter (X axis): φ_π, deg

Click here to view sliced data.

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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:

θ_π, deg	φ_π, deg	dσ/dΩ, mcbn/sterad	Data errors, mcbn/sterad	Systematic errors, mcbn/sterad
22.5	15	1.583	0.7042	0.2378
22.5	45	1.864	0.6331	0.2368
22.5	75	2.436	0.6323	0.2501
22.5	105	2.096	0.7385	0.2468
22.5	135	2.885	0.9605	0.2539
22.5	165	2.492	0.6093	0.2512
22.5	195	2.635	1.155	0.2592
22.5	225	1.552	0.4256	0.2514
22.5	255	2.2	0.5898	0.2546
22.5	285	0.6615	0.2888	0.2305
22.5	315	1.913	0.7315	0.2459
22.5	345	1.469	0.6571	0.2346
37.5	15	1.605	0.4845	0.2168
37.5	45	2.011	0.7486	0.2008
37.5	75	2.592	0.7603	0.2115
37.5	105	2.111	0.5586	0.2196
37.5	135	3.959	0.943	0.293
37.5	165	3.438	0.6447	0.2442
37.5	195	2.541	0.4856	0.2294
37.5	225	3.472	0.995	0.253
37.5	255	4.211	1.986	0.2973
37.5	285	3.51	0.9307	0.2616
37.5	315	2.419	1.172	0.2131
37.5	345	1.005	0.3591	0.1969
52.5	15	1.201	0.5391	0.1446
52.5	75	2.421	0.9623	0.2502
52.5	105	3.227	0.9109	0.2723
52.5	135	2.267	0.432	0.2488
52.5	165	2.323	0.4376	0.2553
52.5	195	3.019	0.5549	0.2745
52.5	225	3.375	1.076	0.2575
52.5	255	3.885	1.042	0.301
52.5	285	2.17	0.9177	0.2433
52.5	315	1.036	0.5251	0.2386
67.5	45	2.397	0.9552	0.207
67.5	75	1.945	0.4021	0.2139
67.5	105	3.727	1.684	0.2486
67.5	135	3.053	0.6641	0.2326
67.5	165	2.772	0.5107	0.2491
67.5	195	3.034	0.7128	0.2497
67.5	225	2.643	0.6124	0.2288
67.5	255	3.053	0.9801	0.2371
67.5	285	2.206	0.4635	0.2115
67.5	315	1.394	0.5375	0.202
82.5	45	1.64	0.4329	0.1884
82.5	75	2.708	0.4545	0.2035
82.5	105	2.434	0.6295	0.2174
82.5	135	2.653	1.137	0.2011
82.5	165	1.654	0.2655	0.1834
82.5	195	1.881	0.3603	0.1907
82.5	225	2.598	0.8372	0.2088
82.5	255	4.015	1.058	0.2333
82.5	285	2.27	0.3869	0.2056
82.5	315	1.655	0.4334	0.1862
97.5	45	0.8779	0.2483	0.2395
97.5	75	2.938	0.6314	0.2797
97.5	105	2.901	0.8206	0.2816
97.5	135	2.774	0.6603	0.255
97.5	165	1.982	0.3205	0.2574
97.5	195	2.345	0.9391	0.2462
97.5	225	2.788	0.8132	0.2878
97.5	255	2.254	0.7	0.2577
97.5	285	2.382	0.4092	0.2566
97.5	315	1.552	0.4596	0.2478
112.5	75	2.083	0.5453	0.2211
112.5	105	2.108	0.4652	0.2117
112.5	135	2.677	0.7025	0.2333
112.5	165	1.613	0.3213	0.2243
112.5	195	1.749	0.4949	0.218
112.5	225	2.679	0.7377	0.2493
112.5	255	3.242	0.7505	0.2387
112.5	285	3.006	0.7445	0.253
112.5	315	0.7827	0.4905	0.1285
127.5	75	2.872	1.053	0.333
127.5	105	3.02	0.8335	0.1823
127.5	165	2.772	1.147	0.1823
127.5	255	3.414	1.275	0.342
127.5	285	3.638	1.702	0.3216