CLAS Physics Database

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Measurement E8M29

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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 :	1.18 — 1.2 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	5.357	1.198	0.8595
7.5	45	16.18	4.293	1.017
7.5	75	6.744	1.102	0.8509
7.5	105	9.553	1.4	0.9042
7.5	135	9.776	1.307	0.8999
7.5	165	8.704	1.122	0.9233
7.5	195	7.071	1.139	0.8884
7.5	225	6.613	0.9243	0.8726
7.5	255	10.18	1.532	0.8893
7.5	285	7.675	1.237	0.8761
7.5	315	7.764	1.238	0.8828
7.5	345	7.815	1.506	0.8903
22.5	15	7.508	2.931	0.6686
22.5	45	4.197	0.711	0.6487
22.5	75	7.744	0.791	0.7043
22.5	105	9.51	0.77	0.723
22.5	135	9.136	0.6183	0.7228
22.5	165	8.078	0.5658	0.6836
22.5	195	10.09	0.6344	0.7555
22.5	225	10.92	0.7089	0.762
22.5	255	9.998	0.8136	0.7454
22.5	285	7.256	0.7694	0.6918
22.5	315	4.385	1.019	0.649
22.5	345	8.199	3.383	0.656
37.5	15	3.667	0.8272	0.6666
37.5	75	10.4	1.129	0.7663
37.5	105	10.61	0.9142	0.78
37.5	135	11.7	0.6814	0.8338
37.5	165	10.23	0.553	0.7936
37.5	195	10.7	0.5898	0.7704
37.5	225	11.11	0.6584	0.782
37.5	255	9.371	0.8617	0.7617
37.5	285	10.31	1.084	0.7819
37.5	345	3.694	1.122	0.6632
52.5	45	5.189	0.7179	0.8052
52.5	75	12.82	0.699	0.8749
52.5	105	13.23	0.9944	0.87
52.5	135	12.82	0.7871	0.8786
52.5	165	11.36	0.549	0.8448
52.5	195	10.34	0.5119	0.8189
52.5	225	12.28	0.7385	0.8642
52.5	255	12.56	0.8888	0.8547
52.5	285	12.4	0.6675	0.8444
52.5	315	5.929	1.835	0.7719
67.5	45	8.798	0.5996	0.8841
67.5	75	14.23	0.5703	0.9807
67.5	105	17.55	0.8505	1.048
67.5	135	15.03	0.9953	1.032
67.5	165	10.77	0.5713	0.926
67.5	195	10.94	0.5692	0.9314
67.5	225	14.09	0.9861	0.9895
67.5	255	16.72	0.7838	1.038
67.5	285	15.39	0.6221	1.017
67.5	315	9.958	0.8728	0.902
82.5	45	10.33	0.8109	0.9428
82.5	75	16.07	0.6153	1.07
82.5	105	18.5	0.7296	1.126
82.5	135	15.2	0.9311	1.055
82.5	165	10.23	0.4434	0.9398
82.5	195	10.27	0.4465	0.9448
82.5	225	14.19	0.8537	1.002
82.5	255	18.59	0.7057	1.126
82.5	285	16.36	0.5986	1.063
82.5	315	10.63	0.8691	0.9588
97.5	15	7.556	1.194	0.8309
97.5	45	12.34	0.7691	0.9351
97.5	75	16.17	0.7784	1.025
97.5	105	18.78	0.6743	1.082
97.5	135	14.08	0.7621	0.9857
97.5	165	8.635	0.5033	0.8694
97.5	195	9.245	0.5229	0.8798
97.5	225	13.42	0.7798	0.946
97.5	255	18.05	0.6402	1.084
97.5	285	15	0.6628	0.998
97.5	315	11.52	0.7193	0.9071
97.5	345	6.652	1.013	0.8272
112.5	15	7.633	0.785	0.8262
112.5	45	11.44	0.5779	0.8677
112.5	75	16.94	1.004	0.9825
112.5	105	16.25	0.6175	0.9831
112.5	135	12.35	0.7771	0.9449
112.5	165	8.107	0.6258	0.8176
112.5	195	9.018	0.6901	0.8514
112.5	225	11.35	0.721	0.8858
112.5	255	16.72	0.6162	1.004
112.5	285	15.57	0.9131	0.9848
112.5	315	12.26	0.6406	0.9023
112.5	345	6.799	0.7798	0.8008
127.5	15	7.927	0.7565	0.7927
127.5	45	10.9	0.5804	0.8526
127.5	75	13.36	0.8265	0.9178
127.5	105	14.81	0.7851	0.9657
127.5	135	12.59	0.9342	0.9096
127.5	225	11.53	0.8156	0.8679
127.5	255	13.9	0.7055	0.9143
127.5	285	12.38	0.8068	0.9086
127.5	315	12.03	0.7085	0.868
127.5	345	7.789	0.7518	0.7969
142.5	15	9.026	1.055	1.02
142.5	45	10.92	1.014	1.064
142.5	75	13.07	0.9501	1.087
142.5	255	10.57	1.917	1.069
142.5	285	15.93	1.194	1.158
142.5	315	13.37	1.093	1.058
142.5	345	7.115	0.8859	1.007
157.5	15	8.625	1.282	1.252
157.5	45	10.62	3.408	0.6666
157.5	315	12.64	3.045	1.361
157.5	345	14.09	5.174	1.355