CLAS Physics Database

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Measurement E151M765

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

Q² :	0.0593 GeV²
W :	1325 GeV
ε :	0.9627
E_beam :	2.2596 GeV
ε_L:	0.23

Select data slice:
cos(θ_π⁺) =

Observable quantity measured (Y axis): A_UL,
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_UL	Stat. error	Syst. error
0.25	66	1.9207	1.4718	0.1798
0.25	294	1.0853	0.8881	0.1046
0.25	306	-1.1338	0.8633	0.1089
0.35	66	0.7362	0.9794	0.0743
0.35	78	-0.138	1.098	0.0326
0.35	294	-1.5225	0.7676	0.1437
0.35	306	-1.1299	0.8466	0.1085
0.45	66	0.103	1.0643	0.0315
0.45	78	1.4306	1.0582	0.1354
0.45	90	1.3117	1.4572	0.1247
0.45	282	-2.1294	0.948	0.1988
0.45	294	-1.6572	0.6997	0.1559
0.45	306	0.0697	1.0872	0.0307
0.55	78	1.2752	0.9779	0.1215
0.55	90	0.1611	1.0688	0.0335
0.55	270	1.4766	1.2183	0.1395
0.55	282	-0.7912	1.0981	0.0789
0.55	294	-0.8759	1.0217	0.0862
0.65	66	1.0974	1.4042	0.1056
0.65	78	-0.2018	1.1715	0.0353
0.65	90	1.9987	1.3916	0.1869
0.65	114	1.5059	1.3905	0.1422
0.65	126	0.0291	1.3427	0.0301
0.65	234	-0.3557	1.2628	0.0445
0.65	246	-1.9082	0.8386	0.1786
0.65	258	-0.9605	0.7854	0.0936
0.65	270	0.7944	1.0861	0.0792
0.65	282	3.2375	1.2195	0.3003
0.75	102	-0.5598	1.2852	0.0597
0.75	114	1.4009	1.0241	0.1327
0.75	126	1.5075	1.1376	0.1423
0.75	138	0.3645	1.1458	0.0451
0.75	222	-1.8565	1.042	0.1739
0.75	234	-0.4945	0.9155	0.0546
0.75	246	-0.3381	0.8545	0.0433
0.75	258	-0.0341	0.8137	0.0302
0.75	270	0.1028	0.9837	0.0315
0.85	102	-3.1092	1.2293	0.2885
0.85	114	-0.2519	1.3325	0.038
0.85	126	1.2637	1.0992	0.1204
0.85	138	0.5724	1.1798	0.0608
0.85	150	0.8776	1.4474	0.0864
0.85	162	2.3605	1.7652	0.2199
0.85	210	-0.8134	1.426	0.0808
0.85	222	1.1372	1.3963	0.1092
0.85	234	-0.4509	1.0305	0.0513
0.85	246	0.6633	0.8864	0.0682
0.85	258	-1.1831	0.8226	0.1132
0.85	270	2.2624	1.0506	0.2109
0.95	150	7.8779	5.6472	0.7277
0.95	222	-5.4353	3.6223	0.5025
0.95	234	-0.5959	3.0586	0.0626
0.95	246	2.3502	3.7863	0.219
0.15	306	-0.6672	0.3921	0.0531
0.25	66	-0.3789	0.4077	0.039
0.25	294	-0.5645	0.4108	0.0477
0.25	306	-0.4995	0.3334	0.0444
0.35	66	0.3582	0.3674	0.0381
0.35	78	-0.0497	0.3551	0.0302
0.35	282	-0.9164	0.4051	0.0672
0.35	294	0.3238	0.3854	0.0368
0.35	306	-0.0269	0.3828	0.0301
0.45	66	0.8244	0.4056	0.0619
0.45	78	0.1047	0.2971	0.0308
0.45	90	-0.1077	0.4583	0.0308
0.45	282	0.041	0.4734	0.0301
0.45	294	0.133	0.4059	0.0312
0.55	66	0.126	0.4397	0.0311
0.55	78	-0.1031	0.3567	0.0308
0.55	90	0.0856	0.5195	0.0305
0.55	258	-0.5414	0.5045	0.0465
0.55	270	0.4614	0.6079	0.0426
0.55	282	-0.1385	0.5188	0.0313
0.55	294	-0.5314	0.4367	0.046
0.65	78	-0.5353	0.4744	0.0462
0.65	90	-0.0351	0.601	0.0301
0.65	102	-0.6019	0.4588	0.0496
0.65	114	0.1962	0.5455	0.0326
0.65	126	-0.0244	0.5419	0.03
0.65	234	0.1143	0.5308	0.0309
0.65	246	0.616	0.5242	0.0503
0.65	258	-0.165	0.387	0.0319
0.65	270	-0.0656	0.4552	0.0303
0.65	282	-0.6735	0.455	0.0534
0.75	90	-0.6137	0.543	0.0502
0.75	102	0.5292	0.4597	0.0459
0.75	114	-0.0425	0.4252	0.0301
0.75	126	0.2905	0.4606	0.0355
0.75	138	0.0474	0.4958	0.0302
0.75	150	0.0212	0.6247	0.03
0.75	222	0.3438	0.5757	0.0375
0.75	234	0.4054	0.5235	0.0401
0.75	246	-0.4493	0.3437	0.0421
0.75	258	0.0482	0.3625	0.0302
0.75	270	-0.3632	0.4154	0.0383
0.75	282	-0.3997	0.5493	0.0398
0.85	102	0.5546	0.6143	0.0472
0.85	114	0.1404	0.444	0.0314
0.85	126	0.1832	0.4485	0.0323
0.85	138	0.353	0.4356	0.0379
0.85	150	-0.2028	0.5882	0.0328
0.85	162	-0.6941	0.6031	0.0545
0.85	210	-0.5047	0.6141	0.0447
0.85	222	0.4603	0.5695	0.0426
0.85	234	0.0365	0.4653	0.0301
0.85	246	0.1495	0.4075	0.0316
0.85	258	0.306	0.4169	0.0361
0.85	270	0.8828	0.4132	0.0652
0.95	126	-0.7441	1.0258	0.0573
0.95	138	-0.6641	1.0393	0.0529
0.95	162	-2.1086	0.8395	0.1416
0.95	210	0.1541	1.1654	0.0317
0.95	222	-0.2136	0.9981	0.0331
0.95	234	0.4672	0.9032	0.0429
0.95	246	-0.2348	0.8668	0.0337
0.95	258	-0.3416	0.8748	0.0374