CLAS Physics Database

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Measurement E8M68

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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 :	0.45 — 0.55 GeV²
W :	1.5 — 1.52 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
7.5	15	5.211	2.044	0.5105
7.5	135	6.348	2.414	0.5054
7.5	165	6.334	1.753	0.5309
22.5	135	2.971	0.6537	0.4385
22.5	195	1.884	0.2927	0.4254
22.5	225	4.913	1.508	0.486
22.5	255	7.82	3.374	0.563
37.5	75	5.578	0.8794	0.6344
37.5	105	6.225	1.895	0.641
37.5	165	2.018	0.4384	0.5892
37.5	195	2.867	0.8359	0.5908
37.5	225	5.194	2.281	0.6133
37.5	255	7.642	3.619	0.692
37.5	285	5.555	1.326	0.6525
52.5	45	5.215	2.203	0.5299
52.5	75	5.978	2.185	0.5383
52.5	105	5.14	1.105	0.54
52.5	255	4.341	0.9879	0.5085
52.5	285	6.103	1.177	0.5474
52.5	315	3.59	0.8657	0.4967
67.5	15	2.757	0.8009	0.4025
67.5	45	3.364	0.6687	0.4101
67.5	75	3.808	0.794	0.4236
67.5	135	4.24	1.033	0.4558
67.5	165	2.689	0.6409	0.4117
67.5	195	1.967	0.3056	0.3971
67.5	225	2.156	0.3788	0.4019
67.5	315	3.005	0.5121	0.4064
67.5	345	1.756	0.4215	0.3927
82.5	45	2.281	0.6203	0.4937
82.5	75	3.909	0.7672	0.519
82.5	105	4.811	0.7087	0.5302
82.5	135	2.16	0.3426	0.4998
82.5	165	3.918	1.709	0.5274
82.5	195	2.545	0.7208	0.4964
82.5	225	4.322	1.52	0.5291
82.5	255	3.696	0.5401	0.5147
82.5	285	5.14	1.885	0.5235
97.5	45	1.76	0.2928	0.3035
97.5	75	3.707	0.73	0.3255
97.5	105	4.061	0.5092	0.3451
97.5	135	2.978	0.6622	0.3263
97.5	165	1.884	0.3529	0.3035
97.5	195	2.399	0.5936	0.3116
97.5	225	3.453	0.7999	0.3372
97.5	255	3.618	0.55	0.3361
97.5	285	5.659	2.165	0.3965
97.5	315	2.49	0.8208	0.3172
112.5	45	2.34	0.6321	0.3538
112.5	75	3.115	0.7407	0.3713
112.5	105	3.038	0.5628	0.3697
112.5	135	2.408	0.9823	0.3629
112.5	165	1.796	0.304	0.347
112.5	195	3.03	1.621	0.3537
112.5	225	3.3	0.9172	0.3905
112.5	255	4.121	1.1	0.3723
112.5	285	3.544	1.252	0.4383
112.5	315	1.653	0.2755	0.3451
112.5	345	1.688	0.7726	0.3391
127.5	45	2.432	0.9433	0.3295
127.5	75	2.913	0.7652	0.3381
127.5	105	2.378	0.4081	0.3353
127.5	135	2.549	0.7575	0.1479
127.5	165	2.168	0.8903	0.1478
127.5	195	1.797	0.5203	0.1478
127.5	225	4.328	2.365	0.1484
127.5	255	3.107	0.7436	0.3461
127.5	285	3.773	1.014	0.3567
127.5	315	1.516	0.3014	0.1477
127.5	345	1.038	0.495	0.3143
142.5	255	1.89	0.7955	0.0732
142.5	285	1.528	0.4929	0.07313
142.5	345	0.3584	0.09228	0.07302