CLAS Physics Database

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Measurement E151M111

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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 :	0.0205 GeV²
W :	1355 GeV
ε :	0.793
E_beam :	1.0539 GeV
ε_L:	0.0601

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	0.1164	0.6703	0.0328
0.25	54	-0.9692	0.7211	0.1143
0.35	30	0.0062	0.6171	0.03
0.35	42	0.5707	0.6044	0.0715
0.35	54	0.1674	0.5976	0.0355
0.35	66	-0.1095	0.8146	0.0325
0.45	18	0.6754	0.7507	0.0825
0.45	30	1.5305	0.5968	0.1767
0.45	42	0.7651	0.5165	0.0921
0.45	54	-0.0963	0.5057	0.0319
0.45	234	0.289	0.8567	0.0445
0.45	258	0.3282	0.7266	0.0479
0.55	30	0.0351	0.6112	0.0303
0.55	42	0.199	0.4709	0.0376
0.55	54	0.7931	0.5816	0.0951
0.55	222	-0.7207	0.5748	0.0873
0.55	234	-0.6637	0.4559	0.0813
0.55	246	0.6634	0.4841	0.0812
0.55	258	-0.0955	0.4983	0.0319
0.55	270	0.5589	0.759	0.0703
0.65	54	0.2567	0.8743	0.0419
0.65	138	-1.3504	0.6477	0.1565
0.65	150	-0.0954	0.6246	0.0319
0.65	162	-0.7939	0.5951	0.0952
0.65	174	0.9892	0.7244	0.1165
0.65	210	1.7617	0.8639	0.2027
0.65	222	1.3161	0.5564	0.1527
0.65	234	-0.191	0.4475	0.037
0.65	246	-0.0008	0.4014	0.03
0.65	258	-0.3006	0.4583	0.0455
0.65	270	-0.0016	0.6291	0.03
0.75	138	-1.0996	0.5857	0.1286
0.75	150	0.616	0.6877	0.0762
0.75	162	-0.3143	0.5772	0.0467
0.75	174	0.8563	0.7668	0.1019
0.75	186	0.1537	0.7576	0.0347
0.75	210	0.7107	0.8032	0.0862
0.75	222	-0.1427	0.6327	0.0341
0.75	234	-0.3126	0.3976	0.0465
0.75	246	-0.1955	0.4198	0.0373
0.75	258	0.1985	0.4715	0.0376
0.75	270	0.4063	0.5892	0.0551
0.85	138	0.3599	0.7909	0.0508
0.85	150	0.556	0.7674	0.07
0.85	162	0.2401	0.7856	0.0406
0.85	222	-0.5101	0.4695	0.0653
0.85	234	-0.3074	0.4292	0.0461
0.85	246	-0.1445	0.3692	0.0342
0.85	258	0.0758	0.4547	0.0312
0.85	270	-0.1172	0.5226	0.0328
0.95	234	0.1809	0.5764	0.0364
0.95	246	-0.006	0.6199	0.03