CLAS Physics Database

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Measurement E151M396

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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 :	0.0707 GeV²
W :	1505 GeV
ε :	0.6863
E_beam :	1.3383 GeV
ε_L:	0.0807

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
0.55	126	-1.4564	0.5506	0.095
0.55	138	0.1621	0.5327	0.0317
0.55	150	-0.2173	0.6399	0.0329
0.55	162	0.6378	0.6576	0.0496
0.55	222	0.6447	0.4991	0.0497
0.55	234	0.6837	0.4585	0.052
0.55	246	0.3216	0.5215	0.0389
0.65	126	-0.6744	0.5407	0.0514
0.65	138	-0.2734	0.5244	0.0344
0.65	150	-0.4433	0.605	0.0407
0.65	210	0.8116	0.5615	0.0585
0.65	222	-0.26	0.5517	0.034
0.65	234	0.1945	0.4653	0.0323
0.65	246	-0.0548	0.4296	0.0302
0.65	258	0.9124	0.6022	0.064
0.75	126	-0.7697	0.4992	0.0563
0.75	138	-0.3944	0.4611	0.0387
0.75	150	-0.4378	0.5576	0.0404
0.75	210	-0.439	0.5811	0.0405
0.75	222	1.0063	0.4931	0.0692
0.75	234	-0.3031	0.4108	0.0354
0.75	246	0.9817	0.4172	0.0678
0.75	258	0.2169	0.496	0.0329
0.85	150	-0.7247	0.587	0.054
0.85	222	-0.609	0.5187	0.0482
0.85	234	1.1444	0.5174	0.077
0.85	246	0.3193	0.4055	0.0359
0.85	258	0.1106	0.55	0.0308
0.95	126	-0.4463	0.4676	0.0408
0.95	138	0.1516	0.5308	0.0314
0.95	246	0.2961	0.4959	0.0352
0.55	258	1.7603	1.0884	0.1102
0.65	138	-0.4424	0.803	0.0401
0.65	150	-1.1895	0.4517	0.0777
0.65	210	-0.4963	0.6621	0.0423
0.65	222	0.7178	0.7444	0.0526
0.65	234	0.2596	0.7577	0.0338
0.65	246	0.5107	0.8625	0.043
0.75	138	0.1946	0.953	0.0322
0.75	150	-0.5268	0.7789	0.0437
0.75	222	2.108	2.108	0.1304
0.75	234	-0.1629	0.7365	0.0316
0.75	246	2.4207	2.4207	0.1488
0.75	258	-0.4449	0.5722	0.0402
0.85	126	-0.171	0.796	0.0317
0.85	222	1.0323	0.9617	0.069
0.85	234	0.5987	0.637	0.0469
0.85	246	1.4988	0.8084	0.0951
0.85	258	-0.0864	0.6979	0.0304
0.95	246	1.2217	1.0247	0.0794