CLAS Physics Database

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Measurement E8M25

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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 :	0.35 — 0.45 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 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	6.737	2.901	0.4812
7.5	75	2.428	0.7772	0.3668
7.5	105	3.248	1.111	0.3925
7.5	165	4.067	1.35	0.2161
7.5	195	5.674	2.149	0.4074
7.5	225	4.188	1.386	0.4275
7.5	285	1.318	0.5298	0.3533
7.5	315	2.146	0.5994	0.3513
22.5	15	2.615	0.5407	0.273
22.5	45	2.775	0.464	0.2632
22.5	75	4.021	0.6688	0.29
22.5	105	3.42	0.5506	0.2838
22.5	135	3.235	0.6448	0.2719
22.5	165	3.868	0.6154	0.2929
22.5	195	4.346	0.6726	0.301
22.5	225	3.645	0.6665	0.2664
22.5	255	3.439	0.6677	0.2934
22.5	285	4.425	0.9083	0.2969
22.5	315	3.822	0.8041	0.2871
22.5	345	3.019	0.5381	0.2776
37.5	15	1.83	0.3968	0.2637
37.5	45	3.636	0.8542	0.3096
37.5	75	4.076	0.8544	0.3147
37.5	105	3.055	0.4592	0.2854
37.5	135	5.416	0.7167	0.3588
37.5	165	4.53	0.6103	0.3094
37.5	195	4.236	0.5321	0.319
37.5	225	4.271	0.6265	0.3088
37.5	255	3.385	0.5203	0.3026
37.5	285	5.037	1.464	0.3433
37.5	315	2.201	0.5248	0.2697
37.5	345	2.309	0.6521	0.2779
52.5	15	2.323	1.133	0.3031
52.5	45	1.407	0.5613	0.2885
52.5	75	2.835	0.8976	0.3128
52.5	105	4.952	0.9477	0.3412
52.5	135	5.255	0.7297	0.3719
52.5	165	4.686	0.6013	0.3488
52.5	195	4.944	0.6245	0.3674
52.5	225	4.042	0.5681	0.3385
52.5	255	3.808	1.044	0.3334
52.5	285	3.736	1.323	0.3222
52.5	345	2.832	1.531	0.3016
67.5	45	1.518	0.3014	0.2597
67.5	75	2.789	0.3882	0.2873
67.5	105	4.479	1.014	0.3019
67.5	135	4.057	0.6807	0.3225
67.5	165	3.601	0.3647	0.3197
67.5	195	3.851	0.3431	0.3095
67.5	225	4.798	0.7796	0.3342
67.5	255	5.285	1.212	0.3354
67.5	285	3.043	0.5148	0.2847
67.5	315	2.911	0.9475	0.2765
82.5	45	2.435	0.3889	0.2543
82.5	75	3.542	0.4363	0.2787
82.5	105	4.141	0.6046	0.2943
82.5	135	4.234	0.6386	0.3074
82.5	165	3.964	0.3647	0.286
82.5	195	3.413	0.3381	0.278
82.5	225	3.712	0.5762	0.2891
82.5	255	4.223	0.5747	0.2924
82.5	285	3.173	0.3998	0.2611
82.5	315	2.215	0.3687	0.257
97.5	45	2.444	0.5393	0.3276
97.5	75	3.536	0.5819	0.3449
97.5	105	4.052	0.5293	0.3747
97.5	135	4.949	0.9472	0.4194
97.5	165	3.449	0.4131	0.3603
97.5	195	3.581	0.4896	0.3574
97.5	225	3.103	0.6881	0.3421
97.5	255	4.173	0.43	0.3655
97.5	285	3.184	0.4579	0.3391
97.5	315	1.984	0.4494	0.3195
112.5	75	4.326	0.8565	0.422
112.5	105	3.672	0.4434	0.4286
112.5	135	2.767	0.6666	0.4051
112.5	165	3.642	0.553	0.4465
112.5	195	4.433	0.797	0.4372
112.5	225	4.877	1.456	0.4435
112.5	255	3.601	0.4748	0.4103
112.5	285	3.395	0.4597	0.4061
112.5	315	1.994	0.9471	0.3848
127.5	75	3.832	1.245	0.267
127.5	105	7.902	3.232	0.7786
127.5	195	3.974	1.566	0.7601
127.5	255	3.877	0.7099	0.7638
127.5	285	3.43	1.051	0.267