CLAS Physics Database

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Measurement E151M157

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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 :	0.0496 GeV²
W :	1415 GeV
ε :	0.6673
E_beam :	1.0539 GeV
ε_L:	0.0849

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	42	1.4452	0.7963	0.1671
0.25	54	-0.4679	0.7666	0.0611
0.35	42	0.1708	0.6308	0.0357
0.35	54	1.3651	0.7732	0.1582
0.45	30	0.7737	0.7733	0.093
0.45	42	0.8378	0.669	0.0999
0.45	54	-0.3669	0.7031	0.0514
0.45	246	-0.9696	0.729	0.1143
0.45	258	-1.0528	0.6574	0.1235
0.55	42	1.531	0.8986	0.1768
0.55	54	2.4581	0.7859	0.2813
0.55	222	-0.0171	0.6949	0.0301
0.55	234	-0.9171	0.5402	0.1086
0.55	246	-0.8105	0.5264	0.097
0.55	258	-0.7131	0.5316	0.0865
0.65	138	-0.5073	0.8125	0.065
0.65	150	-0.5603	0.7794	0.0705
0.65	162	-1.0438	0.6509	0.1225
0.65	174	1.2419	0.8722	0.1444
0.65	210	0.8242	0.8259	0.0984
0.65	222	-1.1434	0.5687	0.1335
0.65	234	0.5572	0.559	0.0701
0.65	246	0.1203	0.4856	0.033
0.65	258	-0.4063	0.489	0.0551
0.65	270	-0.8429	0.5795	0.1005
0.75	138	-0.4225	0.8014	0.0567
0.75	150	0.1745	0.7013	0.036
0.75	162	0.6844	0.7636	0.0834
0.75	174	0.157	0.733	0.0349
0.75	186	0.7634	0.7485	0.0919
0.75	222	-0.5611	0.6089	0.0705
0.75	234	2.1388	0.5905	0.2452
0.75	246	0.5397	0.5258	0.0683
0.75	258	0.0224	0.4701	0.0301
0.75	270	-0.7171	0.5653	0.0869
0.85	138	1.969	0.8205	0.226
0.85	174	-1.0363	0.6688	0.1217
0.85	222	0.4306	0.8108	0.0574
0.85	234	-0.0029	0.4774	0.03
0.85	246	0.2905	0.4894	0.0446
0.85	258	0.0421	0.4038	0.0304
0.85	270	0.3279	0.5456	0.0479
0.95	150	-0.4001	0.6188	0.0545
0.95	270	0.9369	0.6715	0.1107