CLAS Physics Database

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Measurement E151M3081

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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_LU,
Beam asymmetry.
Beam: e, polarization: longitudinal
Target: p (Z=1, A=1), polarization: longitudinal
Final state: π⁺n, polarization: none

Q² :	0.0291 GeV²
W :	1565 GeV
ε :	0.8567
E_beam :	1.9889 GeV
ε_L:	0.0344

Select data slice:
cos(θ_π⁺) =

Observable quantity measured (Y axis): A_LU,
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_LU	Stat. error	Syst. error
0.35	78	-0.2203	0.2367	0.0303
0.35	270	0.2106	0.2494	0.0303
0.35	282	0.0963	0.2443	0.0301
0.45	78	0.037	0.249	0.03
0.45	270	-0.1986	0.2585	0.0303
0.55	90	-0.6031	0.2145	0.0323
0.55	138	-0.143	0.2893	0.0301
0.55	222	-0.6441	0.185	0.0326
0.55	270	0.2583	0.2649	0.0304
0.55	282	-0.1639	0.2386	0.0302
0.65	126	-0.146	0.2607	0.0301
0.65	138	-0.1347	0.1924	0.0301
0.65	198	-0.094	0.2667	0.0301
0.65	210	0.0435	0.2111	0.03
0.65	222	0.2829	0.2296	0.0305
0.65	270	0.4625	0.233	0.0314
0.75	78	0.2571	0.2492	0.0304
0.75	126	0.4848	0.2401	0.0315
0.75	138	-0.196	0.245	0.0303
0.75	210	-0.1666	0.2125	0.0302
0.75	222	0.1602	0.2483	0.0302
0.75	234	-0.0834	0.2438	0.03
0.75	270	-0.2346	0.2682	0.0304
0.75	282	-0.093	0.2411	0.0301
0.85	114	-0.065	0.2501	0.03
0.85	126	0.0914	0.2491	0.0301
0.85	210	0.2063	0.2119	0.0303
0.85	222	0.3062	0.2566	0.0306
0.85	234	-0.0887	0.2191	0.0301