CLAS Physics Database

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Measurement E151M2648

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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 :	0.0415 GeV²
W :	1205 GeV
ε :	0.9477
E_beam :	1.3383 GeV
ε_L:	0.3688

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
0.55	270	-0.2517	0.2675	0.0304
0.55	282	-0.272	0.1982	0.0305
0.65	258	0.1608	0.2236	0.0302
0.65	270	0.3502	0.2023	0.0308
0.65	282	-0.104	0.2247	0.0301
0.75	258	0.1983	0.1883	0.0303
0.75	270	-0.3459	0.2241	0.0308
0.75	282	0.3287	0.2742	0.0307
0.85	138	-0.1289	0.2264	0.0301
0.85	150	0.2716	0.194	0.0305
0.85	162	0.0477	0.2117	0.03
0.85	174	-0.2559	0.178	0.0304
0.85	186	0.4322	0.2348	0.0312
0.85	198	-0.334	0.2412	0.0307
0.85	210	0.1605	0.2432	0.0302
0.95	138	-0.5069	0.2531	0.0317
0.95	174	0.0445	0.2566	0.03
0.45	282	-0.3002	0.3546	0.0306
0.55	258	0.0475	0.3939	0.03
0.55	270	0.116	0.3241	0.0301
0.55	282	0.0009	0.3598	0.03
0.65	246	-0.7494	0.2028	0.0335
0.65	258	0.1644	0.3285	0.0302
0.65	270	-0.1522	0.2577	0.0302
0.65	282	-0.2792	0.3048	0.0305
0.75	246	0.4886	0.2891	0.0316
0.75	258	-0.5481	0.2086	0.0319
0.75	270	0.4983	0.2242	0.0316
0.85	138	0.2208	0.3088	0.0303
0.85	150	0.136	0.2866	0.0301
0.85	162	0.24	0.3365	0.0304
0.85	174	-0.2576	0.2438	0.0304
0.85	186	-0.1164	0.3652	0.0301
0.85	198	-0.0564	0.3337	0.03
0.85	210	0.3289	0.3066	0.0307
0.85	222	-0.0161	0.3343	0.03
0.85	234	0.0578	0.3613	0.03
0.85	246	0.0922	0.3752	0.0301
0.95	150	0.3941	0.3265	0.031
0.95	162	0.5833	0.2822	0.0322
0.95	174	-0.2573	0.3228	0.0304
0.95	186	-0.3126	0.3352	0.0306