CLAS Physics Database

Your browser does not support JavaScript or JavaScript is turned off in your browser. It is strongly recommended to turn JavaScript on to view this page. Some features may not work if JavaScript is turned off.

Measurement E8M62

You are not logged in.

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 :	1.38 — 1.4 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.

Your browser must support Java to use this feature.
You can find appropriate software at www.java.com

Click here to view 3D plot of the data.

Your must have VRML plugin for your browser installed to see this type of 3D plots.
For some types of browsers you can find it here: www.parallelgraphics.com

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	8.833	1.119	0.992
7.5	45	8.569	1.365	0.9103
7.5	75	10.8	2.845	0.9748
7.5	105	6.801	1.05	0.9299
7.5	135	14.3	3.032	0.9851
7.5	165	7.061	1.078	0.8922
7.5	195	12.9	2.273	0.9836
7.5	225	7.483	1.091	0.8657
7.5	255	8.654	1.427	0.9187
7.5	285	11.26	2.747	0.9385
7.5	315	9.515	1.402	0.8888
7.5	345	10.1	1.205	0.9311
22.5	15	9.573	2.081	0.8571
22.5	45	10.4	5.676	0.8472
22.5	75	8.453	1.271	0.8223
22.5	105	8.251	0.9764	0.8308
22.5	135	7.606	0.9592	0.8017
22.5	165	8.876	3.302	0.7965
22.5	195	6.756	1.102	0.7776
22.5	225	6.045	0.9567	0.7791
22.5	255	8.382	1.049	0.8052
22.5	285	7.53	1.08	0.8045
22.5	315	6.88	1.354	0.7863
22.5	345	8.305	1.338	0.8037
37.5	45	7.073	0.6931	0.8043
37.5	75	8.079	0.6583	0.8316
37.5	105	7.415	1.879	0.8314
37.5	255	9.529	3.076	1.003
37.5	285	7.075	0.6109	0.8134
37.5	315	7.163	0.7788	0.8213
52.5	45	5.904	1.707	0.4789
52.5	75	7.157	0.6155	0.5206
52.5	135	4.798	0.4154	0.4596
52.5	165	3.741	0.2425	0.4477
52.5	195	3.623	0.2353	0.4385
52.5	225	3.867	0.3549	0.4439
52.5	285	5.779	0.6154	0.4826
52.5	315	5.79	0.8674	0.4717
67.5	45	4.132	0.4779	0.3371
67.5	75	5.15	0.8758	0.3798
67.5	105	5.029	0.305	0.3673
67.5	135	3.548	0.2956	0.3262
67.5	165	2.674	0.1858	0.3167
67.5	195	3.286	0.2191	0.3309
67.5	225	3.729	0.2894	0.3446
67.5	255	5.272	0.3057	0.368
67.5	285	5.712	2.23	0.3682
67.5	315	3.475	0.416	0.3269
82.5	15	1.21	0.2157	0.1923
82.5	45	2.349	0.3651	0.2187
82.5	75	3.263	0.3098	0.2511
82.5	105	3.239	0.2038	0.2491
82.5	135	3.217	0.2881	0.2458
82.5	165	2.305	0.1914	0.2218
82.5	195	2.297	0.1926	0.2218
82.5	225	3.07	0.27	0.2344
82.5	255	3.685	0.221	0.2706
82.5	285	3.429	0.3018	0.2509
82.5	315	2.779	0.8881	0.2049
82.5	345	0.9568	0.2171	0.1898
97.5	15	1.25	0.7586	0.1227
97.5	45	1.407	0.1623	0.1814
97.5	75	2.561	0.3778	0.2038
97.5	105	2.498	0.1868	0.2062
97.5	135	2.181	0.2525	0.1992
97.5	165	1.752	0.1979	0.1906
97.5	195	1.874	0.1886	0.2038
97.5	225	2.564	0.2652	0.2212
97.5	255	3.219	0.2394	0.2425
97.5	285	2.597	0.2592	0.2054
97.5	315	1.348	0.1813	0.1871
112.5	15	0.6937	0.1728	0.1593
112.5	45	1.419	0.5839	0.1681
112.5	75	1.555	0.2135	0.1721
112.5	105	1.348	0.1519	0.1799
112.5	135	1.385	0.1605	0.1764
112.5	165	1.507	0.1943	0.1915
112.5	195	1.773	0.6608	0.177
112.5	225	1.243	0.1596	0.1752
112.5	255	1.905	0.211	0.1904
112.5	285	2.036	0.2948	0.1895
112.5	315	0.921	0.1243	0.163
112.5	345	0.3902	0.1324	0.07823
127.5	15	0.2725	0.08393	0.04613
127.5	45	0.7076	0.1209	0.1561
127.5	75	0.7927	0.1244	0.1558
127.5	105	0.8364	0.1252	0.1612
127.5	135	0.9965	0.1607	0.1725
127.5	165	1.085	0.2474	0.1686
127.5	195	0.787	0.1444	0.162
127.5	225	1.026	0.1677	0.1701
127.5	255	1.08	0.1407	0.1674
127.5	285	0.8942	0.231	0.159
127.5	315	0.643	0.3261	0.1553
127.5	345	0.3413	0.09223	0.04635
142.5	15	0.3028	0.09163	0.1079
142.5	45	0.3317	0.08935	0.03034
142.5	75	0.4264	0.07337	0.03449
142.5	105	0.4207	0.1478	0.1095
142.5	135	0.4428	0.2373	0.03526
142.5	255	0.6754	0.222	0.04709
142.5	285	0.4749	0.1073	0.113
142.5	315	0.2104	0.0604	0.02597
142.5	345	0.214	0.06579	0.02608
157.5	15	0.2165	0.06955	0.03459
157.5	345	0.6251	0.4088	0.07485