CLAS Physics Database

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Measurement E151M795

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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 :	0.1435 GeV²
W :	1385 GeV
ε :	0.9311
E_beam :	2.2596 GeV
ε_L:	0.3372

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	0.049	0.5621	0.0302
0.25	294	-0.0001	0.4814	0.038
0.35	66	0.8326	0.6412	0.0623
0.35	78	-0.8078	0.5332	0.0609
0.45	66	0.1476	0.5416	0.0315
0.45	294	-0.1782	0.5597	0.0322
0.55	66	-0.2872	0.5783	0.0354
0.55	270	-0.5676	0.5867	0.0478
0.55	282	-0.9478	0.5312	0.0691
0.65	102	0.4778	0.5498	0.0434
0.65	114	0.481	0.6463	0.0435
0.65	126	-0.1611	0.7181	0.0318
0.65	246	-0.0199	0.6474	0.03
0.65	258	-0.9163	0.5372	0.0672
0.65	270	-0.5781	0.4926	0.0484
0.75	90	0.659	0.5889	0.0526
0.75	102	0.0494	0.5704	0.0302
0.75	114	0.7221	0.6342	0.0561
0.75	126	-0.449	0.5234	0.042
0.75	222	-1.5158	0.5378	0.1039
0.75	234	0.6787	0.6024	0.0537
0.75	246	1.4842	0.6502	0.1019
0.75	258	-0.1165	0.4644	0.031
0.75	270	-0.2655	0.675	0.0347
0.75	282	0.0202	0.6175	0.03
0.85	90	0.6021	0.6953	0.0496
0.85	102	0.0201	0.5666	0.03
0.85	114	0.9028	0.6103	0.0664
0.85	126	-0.1593	0.5365	0.0318
0.85	138	1.5112	0.7558	0.1036
0.85	210	-0.7393	0.7632	0.057
0.85	222	-0.4165	0.6548	0.0406
0.85	234	0.134	0.6669	0.0313
0.85	246	0.1361	0.5916	0.0313
0.85	258	-0.5282	0.5169	0.0458
0.85	270	-0.0432	0.4708	0.0301
0.85	282	0.0543	0.6044	0.0302
0.85	294	-0.6428	0.5983	0.0518
0.95	138	3.2606	1.1793	0.2161
0.95	222	-2.0824	1.0285	0.1399
0.95	234	0.0523	1.1509	0.0302
0.95	246	0.548	1.0469	0.0468
0.95	258	0.318	0.9504	0.0365
0.95	270	0.9524	0.9175	0.0693
0.95	282	-0.9954	0.7289	0.0719
0.35	282	1.2629	1.034	0.1204
0.35	294	0.6356	0.8345	0.0659
0.45	66	1.0553	1.1675	0.1019
0.45	282	-1.6353	0.7159	0.1539
0.65	102	0.0246	1.0302	0.0301
0.65	246	-0.9176	0.9668	0.0898
0.65	258	-0.0549	0.9321	0.0304
0.65	270	0.907	1.0351	0.0889
0.75	90	0.0663	1.1471	0.0306
0.75	102	-1.4133	0.808	0.1338
0.75	114	0.2349	1.0634	0.037
0.75	126	-0.0538	1.1796	0.0304
0.75	246	-1.4669	0.7752	0.1387
0.75	258	0.3537	0.847	0.0443
0.75	270	1.0963	0.8877	0.1055
0.85	78	-1.6017	1.2198	0.1508
0.85	102	-0.016	1.0834	0.03
0.85	114	-0.8169	1.009	0.0811
0.85	126	2.7036	1.4827	0.2513
0.85	138	0.8326	1.4234	0.0825
0.85	222	0.908	1.1768	0.089
0.85	234	1.0376	1.2716	0.1004
0.85	246	-1.249	0.8759	0.1191
0.85	258	1.1228	1.0059	0.1079
0.85	270	0.4627	0.7999	0.0522
0.85	282	1.1416	1.0438	0.1096
0.95	126	10.3759	4.2107	0.9581
0.95	138	-1.8964	3.8813	0.1776
0.95	246	5.0549	3.3544	0.4675
0.95	258	-0.8819	2.8442	0.0867
0.95	270	1.9952	2.5912	0.1866
0.95	282	2.181	3.1498	0.2035