CLAS Physics Database

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Measurement E8M65

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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 :	1.44 — 1.46 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	8.467	1.213	0.897
7.5	45	9.055	1.471	0.9026
7.5	75	5.204	0.9336	0.8388
7.5	105	4.122	0.7539	0.842
7.5	135	6.727	1.058	0.8632
7.5	165	5.874	0.8148	0.8523
7.5	195	6.364	1.206	0.8521
7.5	225	7.172	1.21	0.8727
7.5	255	7.233	1.223	0.856
7.5	285	10.57	1.844	0.9102
7.5	315	5.71	1.144	0.856
7.5	345	5.666	0.8806	0.8423
22.5	45	7.338	1.553	0.8235
22.5	75	8.728	1.367	0.8579
22.5	105	6.009	0.8378	0.7884
22.5	135	6.713	0.9483	0.8008
22.5	165	3.941	0.4882	0.7702
22.5	195	3.753	0.4054	0.7725
22.5	225	4.546	0.5994	0.7717
22.5	255	8.938	1.543	0.8651
22.5	285	5.589	0.908	0.7993
22.5	315	7.783	1.918	0.833
37.5	45	7.059	0.7609	0.5307
37.5	75	7.169	0.5148	0.5579
37.5	105	5.371	0.5842	0.5071
37.5	135	5.061	1.102	0.5003
37.5	225	6.602	1.99	0.5266
37.5	255	6.642	0.7458	0.5339
37.5	285	6.805	0.4827	0.5176
37.5	315	4.964	0.6054	0.4916
52.5	45	5.135	0.5646	0.4217
52.5	75	6.836	0.4122	0.4734
52.5	105	5.587	1.223	0.4595
52.5	165	2.52	0.2486	0.3768
52.5	195	2.578	0.2374	0.3815
52.5	255	5.815	1.533	0.4628
52.5	285	6.191	0.3944	0.4578
52.5	315	5.76	0.7183	0.4406
67.5	15	2.57	0.3488	0.2696
67.5	45	4.027	0.3479	0.3015
67.5	75	4.858	0.7819	0.3205
67.5	105	4.634	0.3857	0.3652
67.5	135	3.802	0.2887	0.314
67.5	165	2.689	0.1869	0.2903
67.5	195	2.409	0.168	0.2792
67.5	225	4.19	0.3109	0.3179
67.5	255	4.691	0.3337	0.3442
67.5	285	5.047	0.9059	0.3458
67.5	315	3.627	0.3592	0.2945
67.5	345	3.051	0.53	0.2877
82.5	15	1.584	0.2806	0.2286
82.5	45	3.482	0.5656	0.2793
82.5	75	5.064	1.378	0.292
82.5	105	3.765	0.215	0.2887
82.5	135	3.555	0.3008	0.2725
82.5	165	2.579	0.205	0.2527
82.5	195	2.009	0.1635	0.2416
82.5	225	3.535	0.299	0.2722
82.5	255	4.504	0.2517	0.3042
82.5	285	3.958	0.3814	0.2826
82.5	315	2.878	0.3746	0.2616
82.5	345	2.295	1.125	0.2439
97.5	15	0.7196	0.3541	0.2113
97.5	45	1.805	0.1907	0.2212
97.5	75	3.38	0.2992	0.259
97.5	105	3.082	0.1971	0.2498
97.5	135	2.634	0.2551	0.2402
97.5	165	1.932	0.2196	0.2292
97.5	195	1.885	0.2106	0.2189
97.5	225	2.731	0.2765	0.2497
97.5	255	2.727	0.2011	0.2443
97.5	285	2.891	0.2689	0.2416
97.5	315	1.919	0.203	0.2232
112.5	15	1.059	0.2656	0.1467
112.5	45	1.754	0.4065	0.156
112.5	75	2.209	0.261	0.1747
112.5	105	1.765	0.1743	0.1682
112.5	135	1.712	0.1977	0.1638
112.5	165	1.522	0.1809	0.1664
112.5	195	1.381	0.1591	0.1541
112.5	225	1.727	0.1766	0.1715
112.5	255	1.928	0.2013	0.1706
112.5	285	1.975	0.2518	0.1701
112.5	315	1.06	0.1479	0.1538
127.5	15	0.5414	0.1374	0.06556
127.5	45	0.5986	0.1002	0.1337
127.5	75	1.453	0.2212	0.1539
127.5	105	1.543	0.189	0.1576
127.5	135	0.9903	0.1464	0.1414
127.5	165	1.312	0.2667	0.139
127.5	195	1.472	0.325	0.1582
127.5	225	1.591	0.2677	0.1667
127.5	255	1.45	0.1726	0.1547
127.5	285	1.038	0.1444	0.1426
127.5	315	0.8966	0.1497	0.1387
127.5	345	0.6406	0.1792	0.06564
142.5	15	0.2582	0.08403	0.03768
142.5	45	0.5266	0.1521	0.1146
142.5	75	0.6521	0.1243	0.1128
142.5	105	0.978	0.2988	0.137
142.5	135	0.5185	0.1638	0.03815
142.5	225	1.533	0.7257	0.1359
142.5	285	0.7301	0.1384	0.1217
142.5	315	0.4135	0.1248	0.03793
142.5	345	0.2132	0.06908	0.03763
157.5	15	0.1891	0.1523	0.0179
157.5	345	0.4109	0.1934	0.08618