CLAS Physics Database

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Measurement E151M2057

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Experiment: EG4, 2016

Spokespersons: Xiaochao Zheng

Experiment comment: Final asymmetry results for the ep-> e pi+ (n) channel extracted from CLAS/EG4 data obtained using a longitudinally polarized beam and a longitudinally polarized NH3 target (CAA HS07-02).

No publications available for this experiment

Quantity measured: A_LL,

Beam: e, polarization: longitudinal
Target: p (Z=1, A=1), polarization: longitudinal
Final state: π⁺n, polarization: none

Q² :	0.101 GeV²
W :	1475 GeV
ε :	0.9122
E_beam :	2.2596 GeV
ε_L:	0.1664

Select data slice:
cos(θ_π⁺) =

Observable quantity measured (Y axis): A_LL,
Plot measurement data

Parameter (X axis): φ(π⁺), degrees

Click here to get data in text file, delimited with tabs.

Measured data:

cos(θ_π⁺)	φ(π⁺), degrees	A_LL	Stat. error	Syst. error
0.25	66	0.0641	0.5484	0.0303
0.25	78	-0.2646	0.5007	0.0411
0.25	282	0.0469	0.6819	0.0302
0.25	294	-0.1475	0.4749	0.0401
0.35	66	0.8827	1.1637	0.0865
0.35	78	0.0155	1.0583	0.03
0.35	282	-0.4007	0.9366	0.0475
0.35	294	0.1736	0.9911	0.034
0.45	78	1.2271	1.0419	0.1167
0.45	90	1.0346	1.2603	0.0997
0.45	270	-0.3648	0.8924	0.045
0.45	282	0.0612	0.8754	0.0305
0.45	294	0.262	0.8411	0.0385
0.55	66	-0.0149	1.3664	0.03
0.55	102	-0.2333	1.3241	0.0369
0.55	114	-0.5835	1.0926	0.0614
0.55	126	-2.0014	1.2562	0.1864
0.55	270	-0.037	0.98	0.0302
0.55	282	-1.2604	0.8603	0.1197
0.55	306	0.7653	1.1223	0.0765
0.65	66	1.3101	1.378	0.1241
0.65	102	0.5991	1.1396	0.0627
0.65	114	-0.0911	1.0769	0.0311
0.65	126	0.9042	0.9443	0.0883
0.65	138	0.2087	1.2998	0.0356
0.65	222	2.8844	1.0017	0.2668
0.65	234	0.8053	1.0448	0.0799
0.65	246	-1.1467	1.016	0.1096
0.65	258	1.1169	1.3051	0.1069
0.65	270	2.4194	1.1248	0.2244
0.65	294	-0.0886	0.9064	0.0311
0.75	102	-0.4299	1.125	0.0496
0.75	114	-2.5183	0.978	0.2334
0.75	126	0.4406	1.1194	0.0504
0.75	138	-2.2692	1.0622	0.2107
0.75	198	0.9528	1.4915	0.0926
0.75	210	1.3058	1.1327	0.1237
0.75	222	-1.275	1.0381	0.121
0.75	234	1.2321	1.0288	0.1171
0.75	246	0.4139	1.0966	0.0484
0.75	258	-2.2344	1.0414	0.2075
0.75	282	0.9673	1.1321	0.0938
0.75	294	1.022	1.1991	0.0986
0.85	90	0.033	1.238	0.0302
0.85	102	-1.7824	1.4535	0.1665
0.85	114	0.244	1.2964	0.0375
0.85	126	1.2174	1.2826	0.1158
0.85	138	-0.6881	1.5109	0.07
0.85	222	1.7149	1.3277	0.1604
0.85	234	-0.0655	0.9657	0.0306
0.85	246	0.4413	1.1434	0.0504
0.85	258	0.0827	1.0988	0.0309
0.85	270	1.9103	1.2885	0.1781
0.95	210	1.2729	4.8131	0.1208
0.95	222	-0.0713	4.243	0.0307
0.95	246	3.3279	3.2936	0.3073
0.95	258	-0.4295	3.4537	0.0496
0.25	306	0.0334	0.6221	0.0301
0.35	66	-0.857	0.6432	0.0633
0.35	78	0.4623	0.5074	0.0425
0.35	270	0.187	0.6933	0.0324
0.35	282	-0.4808	0.5485	0.0433
0.35	294	-0.3582	0.586	0.038
0.35	306	-0.1267	0.6389	0.0311
0.45	66	-1.1743	0.4961	0.0821
0.45	78	-0.9645	0.6116	0.0695
0.45	270	-0.9005	0.7726	0.0658
0.45	282	0.8352	0.5023	0.0621
0.45	294	0.8957	0.4798	0.0655
0.55	78	0.7162	0.6292	0.0554
0.55	102	-0.7979	0.6825	0.06
0.55	114	0.2964	0.6488	0.0357
0.55	126	-0.2849	0.6554	0.0353
0.55	234	0.3629	0.8893	0.0382
0.55	258	1.2474	0.7023	0.0865
0.55	270	0.7033	0.6551	0.0547
0.55	282	0.469	0.4744	0.0428
0.65	90	-0.0072	0.7664	0.03
0.65	102	-0.2548	0.6365	0.0343
0.65	114	-0.1719	0.5731	0.032
0.65	126	-1.0862	0.5612	0.0768
0.65	138	-0.8625	0.7213	0.0636
0.65	210	-0.2127	0.8775	0.033
0.65	222	0.6425	0.8626	0.0514
0.65	234	0.7441	0.6639	0.0569
0.65	246	0.7021	0.6176	0.0546
0.65	270	0.0253	0.7907	0.03
0.75	102	-0.3885	0.5659	0.0392
0.75	114	0.4961	0.5169	0.0441
0.75	126	0.0729	0.5676	0.0304
0.75	138	0.2228	0.799	0.0333
0.75	210	-0.8971	0.8977	0.0656
0.75	222	0.6733	0.6971	0.0531
0.75	234	-0.0631	0.6673	0.0303
0.75	246	-0.2482	0.6326	0.0341
0.75	258	-0.4377	0.5572	0.0414
0.75	270	0.5714	0.7728	0.0478
0.75	282	-1.0244	0.7171	0.0731
0.75	294	-0.3825	0.7824	0.039
0.85	78	0.6093	0.8062	0.0497
0.85	90	0.2728	0.6922	0.0349
0.85	102	-0.2369	0.8817	0.0337
0.85	114	-1.056	0.7053	0.075
0.85	126	-0.2084	0.7667	0.0329
0.85	138	-1.7087	0.7337	0.1151
0.85	150	0.6648	0.9014	0.0526
0.85	198	-0.0277	1.062	0.0301
0.85	210	0.652	0.9676	0.0519
0.85	222	1.1692	0.7894	0.0818
0.85	234	2.2663	0.529	0.1504
0.85	246	-0.7446	0.6183	0.057
0.85	258	0.723	0.5811	0.0558
0.85	270	-1.1768	0.6635	0.0822
0.95	90	-0.5594	1.1917	0.0472
0.95	102	0.2732	1.2003	0.0349
0.95	234	-1.2198	1.1889	0.0848
0.95	246	-0.3886	1.0681	0.0392
0.95	258	1.654	0.9594	0.1117