CLAS Physics Database

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Measurement E151M771

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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 :	0.1715 GeV²
W :	1325 GeV
ε :	0.9403
E_beam :	2.2596 GeV
ε_L:	0.5184

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
0.65	270	1.9054	1.3018	0.1784
0.75	90	1.8225	1.3386	0.1709
0.75	102	0.2941	1.1971	0.0405
0.75	114	-0.0451	1.3156	0.0303
0.75	258	-0.8321	1.0462	0.0825
0.75	270	0.1562	1.1132	0.0333
0.75	282	1.607	1.0557	0.1513
0.85	90	-0.7643	1.1527	0.0767
0.85	102	1.1415	1.4677	0.1095
0.85	114	-0.846	1.4607	0.0836
0.85	126	0.1179	1.4488	0.0319
0.85	234	-1.1586	1.3263	0.1111
0.85	246	-1.6315	1.2879	0.1535
0.85	258	0.0476	1.1856	0.0303
0.85	270	-0.0987	1.3775	0.0314
0.85	282	0.7169	1.1704	0.0726
0.85	294	0.6702	1.4686	0.0687
0.95	102	-0.409	4.7519	0.0482
0.95	114	-5.9628	3.6281	0.5511
0.95	126	4.1258	5.1247	0.382
0.95	138	3.97	5.062	0.3676
0.95	246	-4.0587	3.3571	0.3758
0.95	258	-3.3488	3.0781	0.3105
0.95	270	5.6969	3.5522	0.5266
0.95	282	-6.011	2.3487	0.5556
0.95	294	3.0123	3.759	0.2796
0.15	66	0.8724	0.5529	0.0646
0.35	66	0.0653	0.4638	0.0303
0.55	282	-0.2075	0.5063	0.0329
0.65	102	0.2645	0.5632	0.0347
0.65	114	-0.5604	0.5355	0.0475
0.65	258	0.2204	0.5431	0.0333
0.65	270	0.3018	0.5097	0.0359
0.75	90	0.9561	0.5374	0.0695
0.75	102	-0.6461	0.4318	0.0519
0.75	114	0.3806	0.5596	0.039
0.75	126	0.3795	0.6594	0.039
0.75	246	0.3209	0.5626	0.0367
0.75	258	1.5579	0.5313	0.1065
0.75	270	-0.1634	0.3879	0.0319
0.75	282	0.3808	0.4849	0.039
0.75	294	0.6828	0.4483	0.0539
0.85	78	0.7701	0.6372	0.0588
0.85	90	-0.1606	0.5217	0.0318
0.85	102	-0.0939	0.4972	0.0306
0.85	114	-0.3179	0.4651	0.0365
0.85	126	0.3688	0.7221	0.0385
0.85	234	-0.3538	0.57	0.0379
0.85	246	-0.0427	0.5041	0.0301
0.85	258	-0.373	0.4285	0.0387
0.85	270	-0.3512	0.4526	0.0378
0.85	282	0.2633	0.4502	0.0346
0.85	294	-0.0378	0.5045	0.0301
0.95	114	2.5145	0.9902	0.1677
0.95	126	-0.8372	0.8855	0.0626
0.95	138	1.113	1.129	0.079
0.95	222	0.8304	1.1332	0.0622
0.95	246	-0.1676	0.8751	0.032
0.95	258	1.1016	0.8799	0.0783
0.95	270	0.5401	0.8083	0.0464
0.95	282	-1.4049	0.5548	0.097
0.95	294	-1.5336	0.7265	0.105