CLAS Physics Database

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Measurement E8M50

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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 :	1.14 — 1.16 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	2.762	1.063	0.7778
7.5	45	3.555	1.761	0.7805
7.5	75	6.38	1.737	0.8951
7.5	105	4.994	2.22	0.8631
7.5	135	4.772	1.195	0.7869
7.5	165	5.931	1.621	0.7856
7.5	195	6.285	1.867	0.8455
7.5	225	5.556	1.354	0.8195
7.5	255	6.118	1.59	0.8111
7.5	285	6.625	2.017	0.7785
7.5	315	1.489	0.4872	0.7711
7.5	345	2.717	1.019	0.7821
22.5	15	2.501	0.4913	0.3629
22.5	45	4.726	1.021	0.4049
22.5	75	5.168	1.162	0.4405
22.5	105	4.463	0.6302	0.4002
22.5	135	5.842	0.7036	0.4233
22.5	165	3.918	0.4619	0.3928
22.5	195	4.251	0.4825	0.3922
22.5	225	4.658	0.5153	0.4101
22.5	255	3.955	0.5342	0.3823
22.5	285	4.91	0.9848	0.4072
22.5	315	3.384	0.624	0.375
22.5	345	1.968	0.3901	0.3675
37.5	15	2.382	0.8326	0.391
37.5	45	2.73	0.5775	0.3796
37.5	75	5.578	1.081	0.4346
37.5	105	3.435	0.4548	0.3925
37.5	135	5.612	0.5551	0.4304
37.5	165	5.637	0.5109	0.4333
37.5	195	4.822	0.4588	0.4249
37.5	225	4.888	0.5058	0.4151
37.5	255	3.78	0.5708	0.3889
37.5	285	4.028	0.7202	0.4149
37.5	315	2.411	0.8182	0.3788
37.5	345	2.362	0.9406	0.376
52.5	45	3.425	0.8463	0.3804
52.5	75	4.841	0.5701	0.3905
52.5	105	5.473	0.6483	0.4058
52.5	135	5.155	0.4962	0.4082
52.5	165	4.943	0.4184	0.4169
52.5	195	5.669	0.4333	0.4163
52.5	225	4.9	0.5015	0.4
52.5	255	5.531	0.6618	0.4077
52.5	285	5.338	0.6641	0.4099
52.5	315	2.962	0.8365	0.3643
67.5	45	3.414	0.3396	0.3923
67.5	75	6.514	0.5012	0.4564
67.5	105	8.027	0.7926	0.473
67.5	135	7.031	0.6708	0.4673
67.5	165	4.357	0.3824	0.4222
67.5	195	4.677	0.4003	0.4265
67.5	225	6.287	0.6634	0.4752
67.5	255	6.782	0.6458	0.4879
67.5	285	5.644	0.4227	0.4409
67.5	315	4.371	0.3778	0.4127
82.5	45	3.909	0.4118	0.3983
82.5	75	6.814	0.4457	0.4554
82.5	105	7.289	0.5717	0.4701
82.5	135	6.432	0.6257	0.4798
82.5	165	5.339	0.381	0.4343
82.5	195	4.335	0.3233	0.4089
82.5	225	5.883	0.6406	0.4415
82.5	255	7.54	0.5503	0.4845
82.5	285	5.994	0.3844	0.4334
82.5	315	4.323	0.4092	0.4103
97.5	45	3.641	0.5147	0.3817
97.5	75	6.554	0.4849	0.4473
97.5	105	6.642	0.4595	0.4488
97.5	135	5.914	0.5588	0.4313
97.5	165	4.252	0.3913	0.4067
97.5	195	4.382	0.3534	0.4037
97.5	225	6.151	0.564	0.4214
97.5	255	7.467	0.4811	0.4724
97.5	285	7.289	0.501	0.445
97.5	315	3.959	0.678	0.3968
112.5	15	3.201	0.9646	0.367
112.5	45	4.001	0.4788	0.3743
112.5	75	6.677	0.6628	0.4375
112.5	105	6.688	0.4272	0.4251
112.5	135	4.933	0.5619	0.4216
112.5	165	4.684	0.4653	0.39
112.5	195	3.901	0.3837	0.3778
112.5	225	5.519	0.5531	0.4116
112.5	255	7.478	0.4728	0.4459
112.5	285	6.705	0.6171	0.4373
112.5	315	3.686	0.4618	0.3759
112.5	345	2.904	0.6433	0.364
127.5	15	3.151	0.9744	0.5338
127.5	45	5.258	0.5988	0.541
127.5	75	5.736	0.775	0.5687
127.5	105	6.752	0.5769	0.5645
127.5	135	6.393	1.52	0.5838
127.5	165	5.416	1.351	0.568
127.5	195	6.918	2.054	0.6012
127.5	225	6.719	0.8541	0.58
127.5	255	5.816	0.51	0.5637
127.5	285	5.238	0.7757	0.5488
127.5	315	4.44	0.5347	0.532
127.5	345	1.245	0.3863	0.4958
142.5	15	2.568	1.183	0.3544
142.5	45	4.388	1.133	0.3544
142.5	75	6.052	1.358	1.271
142.5	105	12.01	3.872	1.292
142.5	255	9.679	2.207	1.322
142.5	285	6.666	1.712	1.293
142.5	315	4.44	0.763	1.258
142.5	345	3.085	1.353	0.3544