CLAS Physics Database

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Measurement E8M1

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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 :	0.25 — 0.35 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
7.5	15	15.37	5.217	0.7046
7.5	45	4.511	1.682	0.4576
7.5	75	4.478	1.547	0.4505
7.5	105	5.136	1.457	0.4453
7.5	135	5.078	1.123	0.4753
7.5	165	5.875	2.016	0.5003
7.5	195	5.084	1.983	0.4552
7.5	225	6.273	1.716	0.477
7.5	255	10.64	3.299	0.6854
7.5	285	3.248	0.8509	0.4389
7.5	315	3.49	1.565	0.4174
7.5	345	2.533	0.873	0.4189
22.5	15	3.129	0.628	0.3231
22.5	45	2.639	0.4666	0.3083
22.5	75	3.589	0.5794	0.3296
22.5	105	4.842	0.7029	0.3444
22.5	135	5.07	0.7809	0.3676
22.5	165	5.759	1.078	0.3558
22.5	195	5.542	0.8599	0.3623
22.5	225	5.507	0.8328	0.3696
22.5	255	5.13	0.843	0.3685
22.5	285	4.396	0.657	0.3467
22.5	315	5.06	0.8829	0.3593
22.5	345	2.198	0.4541	0.2997
37.5	15	2.325	0.4178	0.2877
37.5	45	3.496	0.7745	0.3115
37.5	75	4.476	1.365	0.329
37.5	105	5.276	0.7831	0.3545
37.5	135	5.487	0.6487	0.3879
37.5	165	4.644	0.6007	0.3331
37.5	195	7.462	1.083	0.4262
37.5	225	6.022	0.7469	0.3861
37.5	255	6.269	1.419	0.3799
37.5	285	3.345	0.7848	0.3099
37.5	315	2.819	0.6852	0.2959
37.5	345	2.178	0.3893	0.2876
52.5	75	3.377	0.993	0.3504
52.5	135	7.008	0.9665	0.4557
52.5	165	5.859	0.6565	0.415
52.5	195	6.266	0.633	0.4268
52.5	225	6.578	1.008	0.4603
52.5	345	3.281	1.533	0.3571
67.5	45	1.704	0.3243	0.3753
67.5	75	3.747	0.495	0.3993
67.5	105	5.557	1.35	0.4268
67.5	135	9.01	1.758	0.5555
67.5	165	5.023	0.4217	0.4327
67.5	195	5.098	0.4392	0.4275
67.5	225	5.526	1.379	0.4135
67.5	255	6.707	2.027	0.4616
67.5	285	3.493	0.4543	0.4013
67.5	315	1.949	0.483	0.38
82.5	45	2.258	0.506	0.3542
82.5	75	4.951	0.7095	0.3816
82.5	105	5.273	0.5417	0.4055
82.5	135	6.025	2.075	0.4208
82.5	165	4.439	0.4801	0.4105
82.5	195	4.568	0.4656	0.4125
82.5	225	3.468	0.6595	0.3975
82.5	255	3.696	0.4607	0.3731
82.5	285	4.561	0.482	0.3841
82.5	315	2.78	0.485	0.3524
97.5	75	4.374	0.5938	0.3442
97.5	105	4.75	0.5017	0.3588
97.5	135	3.182	0.7444	0.3463
97.5	165	4.712	0.6309	0.3498
97.5	195	3.681	0.4224	0.3455
97.5	225	5.889	2.102	0.3959
97.5	255	4.544	0.4748	0.3649
97.5	285	4.421	0.487	0.3485
112.5	75	7.512	2.01	0.5809
112.5	105	5.942	0.7635	0.5575
112.5	165	5.211	1.104	0.5846
112.5	195	7.247	2.154	0.6016
112.5	225	7.347	2.06	0.3683
112.5	255	5.462	0.6122	0.5493
112.5	285	5.727	1.751	0.5465
127.5	45	2.718	1.202	0.3215
127.5	75	5.341	2.392	0.3215
127.5	105	9.306	2.408	1.181
127.5	255	6.292	1.04	1.234
127.5	315	4.056	2.286	1.133