CLAS Physics Database

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Measurement E151M297

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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 :	0.0415 GeV²
W :	1355 GeV
ε :	0.8685
E_beam :	1.3383 GeV
ε_L:	0.1278

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	Data errors	Systematic errors
0.25	30	0.4547	0.6162	0.0411
0.25	42	0.7364	0.5587	0.0595
0.35	18	-1.3779	0.5121	0.0904
0.35	30	0.2527	0.6136	0.0338
0.45	30	0.9742	0.5525	0.0674
0.45	42	-0.7788	0.5716	0.0568
0.55	234	0.043	0.5404	0.0301
0.55	258	0.2894	0.5788	0.0349
0.65	126	-0.2805	0.5226	0.0347
0.65	138	-0.3515	0.4607	0.0371
0.65	150	-1.0767	0.5832	0.0731
0.65	222	-0.5052	0.5422	0.0433
0.65	234	-0.5089	0.4165	0.0435
0.65	246	0.2783	0.4114	0.0346
0.65	258	-0.3212	0.4236	0.036
0.75	114	0.6884	0.4934	0.0521
0.75	126	0.5975	0.4439	0.0476
0.75	138	-0.4103	0.4109	0.0393
0.75	150	0.4362	0.5213	0.0404
0.75	162	-0.2846	0.4774	0.0348
0.75	210	0.1269	0.6154	0.031
0.75	222	0.8619	0.471	0.0612
0.75	234	-0.3374	0.398	0.0366
0.75	246	-0.3591	0.3601	0.0373
0.75	258	-0.0471	0.3877	0.0301
0.75	270	0.5654	0.4264	0.0461
0.85	102	0.8714	0.6067	0.0617
0.85	126	0.124	0.4916	0.031
0.85	138	-0.1272	0.4507	0.031
0.85	150	0.1796	0.455	0.032
0.85	162	0.0826	0.5634	0.0304
0.85	222	0.0774	0.4876	0.0304
0.85	234	0.0302	0.4256	0.0301
0.85	246	0.3067	0.3803	0.0355
0.85	258	-0.0943	0.302	0.0306
0.85	270	-0.2246	0.3728	0.0331
0.85	282	0.0691	0.5337	0.0303
0.95	114	0.4573	0.4423	0.0413
0.95	126	-0.2268	0.4881	0.0331
0.95	138	0.2955	0.5187	0.0351
0.95	222	0.1732	0.5336	0.0319
0.95	234	-0.1583	0.455	0.0316
0.95	246	0.631	0.3827	0.0493
0.95	258	0.4834	0.4043	0.0424
0.95	270	1.0613	0.4597	0.0722
0.35	42	-0.2411	0.9284	0.0333
0.45	30	0.0523	0.816	0.0302
0.45	42	1.6509	0.9652	0.1038
0.55	234	0.2389	0.7778	0.0333
0.55	246	-0.1991	0.7601	0.0323
0.55	258	-0.697	0.4941	0.0516
0.65	126	-0.0393	0.6966	0.0301
0.65	138	0.442	0.7671	0.0401
0.65	150	-1.1939	0.5249	0.0779
0.65	162	0.8191	1.1618	0.0577
0.65	222	-0.3671	0.6153	0.0373
0.65	234	1.083	0.7114	0.0718
0.65	246	-0.0888	0.4816	0.0305
0.65	258	-0.556	0.4566	0.045
0.75	114	1.7514	1.352	0.1097
0.75	126	0.0344	0.6431	0.0301
0.75	138	0.1153	0.7538	0.0308
0.75	150	1.2147	1.0837	0.0791
0.75	162	2.0156	1.1722	0.125
0.75	222	-0.3843	0.5268	0.0379
0.75	234	0.2229	0.6212	0.0329
0.75	246	0.9446	0.6342	0.0643
0.75	258	0.0722	0.4969	0.0303
0.75	270	0.6968	0.8427	0.0516
0.85	114	1.5551	1.3691	0.0983
0.85	126	-0.1506	0.7283	0.0313
0.85	138	0.4259	0.9412	0.0395
0.85	150	-0.7448	0.6044	0.054
0.85	162	-0.4958	0.7665	0.0423
0.85	210	0.9129	1.0215	0.0626
0.85	222	-0.1132	0.665	0.0308
0.85	234	0.0829	0.6583	0.0304
0.85	246	-0.1763	0.4547	0.0318
0.85	258	0.6076	0.6342	0.0473
0.85	270	0.7289	0.6937	0.0532
0.95	126	0.6367	0.9863	0.0487
0.95	222	1.5032	0.9717	0.0954
0.95	234	0.4322	0.7361	0.0397
0.95	246	-0.1903	0.5584	0.0321
0.95	258	-0.424	0.4497	0.0394
0.95	270	0.2996	0.7222	0.035