CLAS Physics Database

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Measurement E8M40

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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 :	1.4 — 1.42 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	11.02	1.101	0.9701
7.5	45	8.65	0.9259	0.8551
7.5	75	10.97	1.378	0.8752
7.5	105	9.614	1.054	0.8485
7.5	135	8.586	0.9545	0.8303
7.5	165	6.684	0.7042	0.8079
7.5	195	10.77	1.195	0.8813
7.5	225	8.841	1.007	0.8544
7.5	255	12.75	1.463	0.9409
7.5	285	7.869	0.9885	0.8228
7.5	315	12.72	2.039	0.9073
7.5	345	13.11	1.205	0.9248
22.5	15	11.58	4.333	0.7654
22.5	45	10.37	2.105	0.7282
22.5	75	8.737	1.085	0.7023
22.5	105	8.258	0.8322	0.6775
22.5	135	6.342	0.6139	0.6469
22.5	165	5.569	0.8493	0.6287
22.5	195	5.956	0.9008	0.6272
22.5	225	6.306	0.6607	0.6399
22.5	255	9.024	0.986	0.6993
22.5	285	7.793	1.07	0.6543
22.5	315	8.142	1.284	0.6861
22.5	345	6.952	1.127	0.6717
37.5	45	7.521	0.5417	1.005
37.5	75	7.333	0.4571	1.004
37.5	105	7.373	1.27	1.015
37.5	255	8.252	1.609	1.012
37.5	285	7.563	0.4299	1.017
37.5	315	7.338	0.4671	1.006
52.5	45	5.868	0.5625	0.4808
52.5	75	8.202	0.7454	0.5381
52.5	135	4.761	0.3581	0.4635
52.5	165	2.905	0.1795	0.4246
52.5	195	2.737	0.1721	0.4188
52.5	225	5.186	0.3782	0.4633
52.5	285	6.787	0.4823	0.5073
52.5	315	5.208	0.6889	0.4695
67.5	15	2.306	0.3366	0.3086
67.5	45	4.356	0.4137	0.357
67.5	75	5.786	0.9836	0.3645
67.5	105	5.756	0.2707	0.3875
67.5	135	4.205	0.3014	0.3572
67.5	165	2.418	0.1514	0.3167
67.5	195	2.396	0.1507	0.3109
67.5	225	3.892	0.2769	0.3476
67.5	255	5.79	0.2501	0.4055
67.5	285	5.681	0.7749	0.3915
67.5	315	4.429	0.4626	0.3595
82.5	15	1.447	0.2708	0.229
82.5	45	2.962	0.5438	0.2561
82.5	75	4.135	0.2808	0.297
82.5	105	4.189	0.2233	0.2941
82.5	135	3.58	0.2673	0.2787
82.5	165	2.131	0.1513	0.2449
82.5	195	2.302	0.1573	0.2519
82.5	225	3.335	0.2737	0.2723
82.5	255	4.053	0.1942	0.2981
82.5	285	3.711	0.2408	0.2963
82.5	315	3.291	1.093	0.2613
82.5	345	1.294	0.2929	0.227
97.5	45	1.806	0.1399	0.1871
97.5	75	2.654	0.2271	0.2212
97.5	105	2.77	0.1738	0.2108
97.5	135	2.537	0.2289	0.2083
97.5	165	1.719	0.1439	0.1826
97.5	195	1.652	0.1697	0.1842
97.5	225	2.226	0.2019	0.2066
97.5	255	2.796	0.166	0.2142
97.5	285	2.543	0.2182	0.2109
97.5	315	1.837	0.1452	0.1848
112.5	15	0.5118	0.08332	0.1162
112.5	45	1.189	0.1227	0.1309
112.5	75	1.579	0.1647	0.1481
112.5	105	1.875	0.1419	0.1571
112.5	135	1.542	0.3231	0.1432
112.5	165	1.311	0.1454	0.1374
112.5	195	1.223	0.1283	0.1449
112.5	225	1.439	0.1263	0.1416
112.5	255	1.714	0.1301	0.1506
112.5	285	1.422	0.1498	0.1398
112.5	315	0.8243	0.09437	0.1225
112.5	345	0.4566	0.07234	0.07301
127.5	15	0.3742	0.09164	0.04714
127.5	45	0.8069	0.1347	0.1037
127.5	75	1.143	0.1269	0.1097
127.5	105	1.194	0.1372	0.1195
127.5	135	1.08	0.1561	0.1079
127.5	165	0.6953	0.1152	0.09751
127.5	195	0.7729	0.1141	0.09908
127.5	225	0.927	0.1278	0.1028
127.5	255	1.02	0.1121	0.1086
127.5	285	0.922	0.1016	0.1041
127.5	315	0.4494	0.07692	0.08814
127.5	345	0.2714	0.05991	0.04692
142.5	15	0.2076	0.05195	0.03194
142.5	45	0.3385	0.07034	0.03411
142.5	75	0.5583	0.08028	0.148
142.5	105	0.8179	0.1874	0.1502
142.5	255	0.9949	0.3017	0.1556
142.5	285	0.4545	0.07955	0.1449
142.5	315	0.6128	0.1494	0.1503
142.5	345	0.2294	0.05037	0.03223
157.5	15	0.4019	0.1629	0.1037
157.5	345	0.2822	0.09272	0.1054