CLAS Physics Database

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Measurement E8M30

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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 :	1.2 — 1.22 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	45	8.112	2.194	0.9482
7.5	75	9.983	1.47	1.011
7.5	105	17.04	1.875	1.161
7.5	135	12.79	1.729	1.008
7.5	165	12.29	1.537	0.9759
7.5	195	12.04	1.474	0.9777
7.5	225	9.823	1.151	0.9746
7.5	255	11.94	1.482	0.9796
7.5	285	11.19	1.553	0.9935
7.5	315	13.8	3.441	1.002
7.5	345	7.401	3.63	0.9174
22.5	15	8.001	1.842	0.9365
22.5	45	8.876	4.106	0.978
22.5	75	8.893	0.9305	0.977
22.5	105	13.33	0.9609	1.055
22.5	135	13.19	0.797	1.048
22.5	165	12.77	0.747	1.057
22.5	195	12.55	0.7305	1.039
22.5	225	11.76	0.7323	1.028
22.5	255	11.58	0.8909	1.005
22.5	285	8.749	1.069	0.9902
22.5	345	8.648	2.078	0.9846
37.5	15	6.386	1.114	0.8843
37.5	75	12.77	1.434	0.9736
37.5	105	14.76	1.093	1.027
37.5	135	14.66	0.7559	1.019
37.5	165	12.93	0.6294	0.975
37.5	195	13.3	0.6492	1.008
37.5	225	13.56	0.7179	1.004
37.5	255	14.19	1.13	0.9851
37.5	285	10.94	1.085	0.9593
37.5	345	5.737	0.8678	0.8667
52.5	45	14.01	3.916	1.007
52.5	75	15.11	0.7138	1.083
52.5	105	16.65	0.9722	1.128
52.5	135	16.5	0.924	1.121
52.5	165	11.82	0.5292	1.038
52.5	195	13.88	0.5923	1.061
52.5	225	15.48	0.8397	1.117
52.5	255	16.52	1.022	1.119
52.5	285	15.81	0.6954	1.113
52.5	315	13.78	3.902	1.026
67.5	45	14.78	2.413	1.162
67.5	75	19.45	0.6763	1.276
67.5	105	19.72	0.8544	1.265
67.5	135	15.71	0.9157	1.195
67.5	165	12.24	0.6043	1.12
67.5	195	12.97	0.6348	1.134
67.5	225	17.72	1.068	1.235
67.5	255	21.35	0.9044	1.326
67.5	285	18.72	0.6564	1.247
67.5	315	12.21	1.285	1.102
82.5	45	12.69	0.994	1.163
82.5	75	19.48	0.6784	1.299
82.5	105	22.34	0.8087	1.385
82.5	135	18.81	1.032	1.29
82.5	165	10.88	0.4665	1.142
82.5	195	11.66	0.4724	1.165
82.5	225	18.43	1.031	1.274
82.5	255	21.94	0.7364	1.375
82.5	285	19.24	0.661	1.292
82.5	315	11.96	0.9437	1.159
97.5	15	6.986	0.7731	0.9891
97.5	45	14.81	0.751	1.104
97.5	75	20.89	0.9291	1.258
97.5	105	21.27	0.7287	1.263
97.5	135	17.62	0.8806	1.187
97.5	165	11.09	0.5623	1.049
97.5	195	11.6	0.581	1.047
97.5	225	16.24	0.8217	1.187
97.5	255	21.61	0.701	1.268
97.5	285	21.01	0.8838	1.231
97.5	315	14.54	0.7362	1.111
97.5	345	9.513	1.253	1.029
112.5	15	8.556	0.6593	0.926
112.5	45	13.54	0.5946	1.002
112.5	75	18.57	1.001	1.135
112.5	105	18.34	0.6403	1.125
112.5	135	15.49	0.9	1.041
112.5	165	9.545	0.633	0.9448
112.5	195	9.129	0.5903	0.9364
112.5	225	12.85	0.7188	0.9875
112.5	255	19.24	0.6487	1.153
112.5	285	19.65	1.032	1.174
112.5	315	14.34	0.6586	1.035
112.5	345	8.518	0.8025	0.932
127.5	15	9.591	0.755	0.9156
127.5	45	12.94	0.6316	0.9848
127.5	75	14.54	0.7746	1.017
127.5	105	16.95	0.8867	1.101
127.5	135	11.1	0.7501	0.9581
127.5	165	8.711	1.449	0.919
127.5	225	13.73	1.048	1.022
127.5	255	15.98	0.7766	1.041
127.5	285	15.4	0.8537	1.054
127.5	315	13.49	0.7252	0.9696
127.5	345	7.889	0.671	0.8883
142.5	15	9.8	0.8716	0.8606
142.5	45	10.15	0.6956	0.8889
142.5	75	12.6	0.7228	0.9456
142.5	105	15.17	2.085	0.9816
142.5	255	11.32	2.037	0.9632
142.5	285	14.46	0.879	0.9466
142.5	315	11.71	0.8301	0.9052
142.5	345	9.766	0.9197	0.8724
157.5	15	11.84	1.485	1.505
157.5	45	15.43	4.325	1.422
157.5	315	13.81	3.985	1.356
157.5	345	11.35	1.59	1.428