CLAS Physics Database

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Measurement E151M395

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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 :	1505 GeV
ε :	0.6963
E_beam :	1.3383 GeV
ε_L:	0.0697

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
0.45	222	1.054	1.0138	0.0702
0.55	138	0.3023	0.97	0.0351
0.55	222	1.3192	0.946	0.0849
0.55	234	0.1178	0.7594	0.0308
0.55	246	-0.6791	0.5166	0.0507
0.65	126	-0.2581	0.8314	0.0338
0.65	138	-0.9855	0.6479	0.0665
0.65	150	0.1933	0.9538	0.0322
0.65	210	0.4209	0.8991	0.0393
0.65	222	-0.2423	0.6672	0.0334
0.65	234	0.5211	0.8628	0.0434
0.65	246	0.3434	0.7451	0.0364
0.75	138	-1.2693	0.4101	0.0821
0.75	150	-1.5301	0.3656	0.0969
0.75	210	-0.9379	0.539	0.0639
0.75	222	-0.1481	0.6624	0.0313
0.75	234	0.2979	0.6651	0.035
0.75	246	-0.5584	0.4839	0.0451
0.75	258	0.4083	0.9013	0.0388
0.85	114	0.9892	1.0769	0.0667
0.85	126	0.735	1.1135	0.0535
0.85	210	-0.376	0.7203	0.0376
0.85	222	-0.553	0.6117	0.0448
0.85	234	1.2937	0.8735	0.0835
0.85	246	-1.0376	0.3848	0.0693
0.85	258	0.8345	0.9525	0.0585
0.95	234	0.1805	0.725	0.0319
0.95	246	1.3428	0.9651	0.0862
0.95	258	0.8659	0.8052	0.0602
0.35	30	0.0288	0.6246	0.0301
0.55	138	-0.6369	0.4677	0.0496
0.55	222	0.8836	0.521	0.0624
0.55	234	0.7832	0.4542	0.057
0.55	246	0.6932	0.566	0.0524
0.65	126	-0.9498	0.5626	0.066
0.65	138	-0.4287	0.522	0.0401
0.65	150	-1.6075	0.4025	0.104
0.65	162	-0.5704	0.5406	0.0463
0.65	210	0.927	0.6005	0.0648
0.65	222	0.3846	0.5238	0.0383
0.65	234	0.1872	0.469	0.0322
0.65	246	0.7118	0.4162	0.0533
0.65	258	1.2183	0.5567	0.0812
0.75	126	-0.2635	0.562	0.0342
0.75	138	-0.349	0.5275	0.037
0.75	150	-0.4132	0.5894	0.0394
0.75	162	0.0291	0.4991	0.0301
0.75	222	0.919	0.4852	0.0643
0.75	234	0.0481	0.468	0.0301
0.75	246	0.3077	0.4807	0.0355
0.75	258	0.9582	0.4927	0.0665
0.85	114	-0.4164	0.5662	0.0396
0.85	126	-0.7428	0.5819	0.0549
0.85	138	-0.7317	0.584	0.0543
0.85	222	0.0289	0.491	0.0301
0.85	234	0.4243	0.4506	0.0399
0.85	246	0.5538	0.4307	0.0456
0.85	258	0.3813	0.4638	0.0382
0.95	126	-0.3388	0.5375	0.0366
0.95	222	0.466	0.4986	0.0416
0.95	246	0.2518	0.5286	0.0338
0.95	258	0.1535	0.5011	0.0315