CLAS Physics Database

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Measurement E151M1817

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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 :	0.0496 GeV²
W :	1475 GeV
ε :	0.8994
E_beam :	1.9889 GeV
ε_L:	0.0869

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
0.15	30	-0.5309	0.8291	0.044
0.15	42	-0.9858	0.7928	0.0668
0.15	318	-0.7076	0.8817	0.0523
0.25	30	-0.4658	0.7082	0.0412
0.25	54	0.3025	0.7158	0.0352
0.25	66	0.1721	0.658	0.0318
0.25	78	0.2272	0.5165	0.033
0.25	90	-1.4346	0.7287	0.092
0.25	282	0.9227	0.5426	0.0635
0.25	294	-0.4128	0.5532	0.0391
0.25	306	0.9145	0.6135	0.063
0.25	318	-0.7268	0.6818	0.0533
0.25	330	-0.8293	0.7486	0.0585
0.35	18	-0.0721	0.674	0.0303
0.35	30	-0.3007	0.7312	0.0351
0.35	42	1.2371	0.7122	0.0807
0.35	54	0.0336	0.6824	0.0301
0.35	66	0.3771	0.427	0.0377
0.35	78	0.2195	0.435	0.0328
0.35	90	-1.0431	0.5895	0.07
0.35	258	-0.0115	0.8539	0.03
0.35	270	-0.4083	0.5005	0.0389
0.35	282	0.4008	0.4053	0.0386
0.35	294	0.8648	0.4661	0.0604
0.35	306	-0.4457	0.6396	0.0404
0.35	318	-0.094	0.7735	0.0305
0.35	330	-0.4212	0.7336	0.0394
0.45	18	-0.5811	0.7914	0.0463
0.45	30	1.6086	0.696	0.102
0.45	66	0.1132	0.4967	0.0308
0.45	78	-0.6472	0.4269	0.0494
0.45	90	0.5934	0.4916	0.0468
0.45	102	0.9212	0.6226	0.0634
0.45	114	0.8426	0.65	0.0592
0.45	126	0.2201	0.7557	0.0328
0.45	246	0.0823	0.7098	0.0304
0.45	258	-0.0778	0.5034	0.0304
0.45	270	-0.1264	0.4359	0.031
0.45	282	-0.6311	0.3647	0.0486
0.45	294	-0.1145	0.4676	0.0308
0.45	306	-0.5202	0.6019	0.0435
0.45	318	0.0424	0.6487	0.0301
0.45	330	-0.8218	0.625	0.0581
0.55	66	-0.6288	0.6143	0.0485
0.55	78	0.4263	0.4845	0.0396
0.55	90	-0.3031	0.4888	0.0352
0.55	102	-0.2206	0.5174	0.0328
0.55	114	-0.6818	0.5691	0.0511
0.55	126	0.3294	0.4988	0.036
0.55	138	-0.1121	0.5382	0.0308
0.55	150	-0.4551	0.6914	0.0407
0.55	210	-0.3301	0.6685	0.0361
0.55	222	-0.0454	0.5509	0.0301
0.55	234	-0.4332	0.5796	0.0399
0.55	246	-0.2155	0.5343	0.0327
0.55	258	0.4608	0.4477	0.041
0.55	270	-0.32	0.428	0.0357
0.55	282	-0.1535	0.3867	0.0314
0.55	294	-0.2526	0.508	0.0337
0.55	306	0.0167	0.8762	0.03
0.65	54	-0.0806	0.8323	0.0304
0.65	66	-0.3619	0.6009	0.0372
0.65	78	-0.8948	0.5372	0.062
0.65	90	0.6764	0.5633	0.0508
0.65	102	-0.9908	0.5452	0.0671
0.65	114	-0.472	0.4332	0.0414
0.65	126	-0.4364	0.4427	0.04
0.65	138	-0.4104	0.5013	0.039
0.65	150	-0.13	0.6356	0.031
0.65	162	1.0737	0.7105	0.0716
0.65	198	0.0775	0.7003	0.0304
0.65	210	-1.0333	0.5206	0.0694
0.65	222	0.1208	0.4369	0.0309
0.65	234	0.4506	0.4557	0.0406
0.65	246	0.103	0.4878	0.0306
0.65	258	-0.3605	0.4603	0.0371
0.65	270	0.5858	0.5157	0.0465
0.65	282	-0.6085	0.602	0.0475
0.65	294	0.0962	0.6133	0.0306
0.65	306	0.5637	0.5961	0.0455
0.75	66	0.7022	0.612	0.0521
0.75	78	-0.6775	0.6144	0.0508
0.75	90	-0.6058	0.8036	0.0474
0.75	102	-1.0061	0.5937	0.0679
0.75	114	-0.0382	0.5263	0.0301
0.75	126	-1.0357	0.4124	0.0696
0.75	138	0.6115	0.4831	0.0477
0.75	150	0.3049	0.6223	0.0352
0.75	162	1.0909	0.6874	0.0726
0.75	174	-0.1128	0.8818	0.0308
0.75	186	-0.2729	0.7872	0.0343
0.75	198	0.4414	0.656	0.0402
0.75	210	-0.718	0.4719	0.0528
0.75	222	0.4537	0.4221	0.0407
0.75	234	-0.1946	0.4121	0.0322
0.75	246	-0.3798	0.4781	0.0378
0.75	258	0.0736	0.4945	0.0303
0.75	270	0.323	0.645	0.0358
0.75	282	-0.3885	0.4401	0.0381
0.75	294	-0.0796	0.4717	0.0304
0.85	90	-0.0793	0.6909	0.0304
0.85	102	0.4054	0.6618	0.0388
0.85	114	0.1827	0.5503	0.032
0.85	126	0.3071	0.6564	0.0353
0.85	138	0.4783	0.5618	0.0417
0.85	186	-1.2557	0.693	0.0818
0.85	198	0.2439	0.6873	0.0334
0.85	210	-0.0764	0.4823	0.0304
0.85	222	-0.2339	0.4775	0.0332
0.85	234	-0.2802	0.3725	0.0345
0.85	246	1.0889	0.4073	0.0725
0.85	258	1.4087	0.4922	0.0905
0.85	270	1.3446	0.5968	0.0868
0.85	282	-0.3318	0.8177	0.0361
0.95	198	-0.194	0.7467	0.0322
0.95	222	-0.2777	0.6931	0.0344
0.95	234	-0.7178	0.4588	0.0528
0.95	246	0.5543	0.62	0.045
0.95	258	-0.2113	0.6963	0.0326