CLAS Physics Database

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Measurement E151M2923

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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 :	0.1205 GeV²
W :	1235 GeV
ε :	0.956
E_beam :	1.9889 GeV
ε_L:	0.6926

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	66	-0.3185	0.2305	0.0307
0.45	66	0.3715	0.2533	0.0309
0.45	78	-0.3079	0.2184	0.0306
0.45	282	0.0866	0.2359	0.0301
0.55	78	0.2166	0.2261	0.0303
0.55	270	-0.6721	0.1546	0.0329
0.55	282	0.0768	0.2273	0.03
0.65	258	-0.1191	0.2805	0.0301
0.65	270	0.0966	0.1652	0.0301
0.65	282	0.0107	0.2153	0.03
0.75	102	-0.0002	0.2588	0.03
0.75	258	-0.0447	0.2157	0.03
0.75	270	0.0618	0.184	0.03
0.75	282	0.2709	0.1969	0.0305
0.85	90	0.0585	0.2277	0.03
0.85	102	0.4819	0.1964	0.0315
0.85	114	-0.0115	0.1778	0.03
0.85	126	-0.2136	0.1817	0.0303
0.85	138	0.2208	0.2391	0.0303
0.85	258	-0.4908	0.1874	0.0316
0.85	270	0.1463	0.2139	0.0301
0.95	90	0.3265	0.2157	0.0307
0.95	102	0.0467	0.2021	0.03
0.95	114	0.0059	0.2113	0.03
0.95	126	-0.2257	0.1838	0.0303
0.95	138	0.3004	0.2167	0.0306
0.95	150	0.3018	0.192	0.0306
0.95	162	-0.0598	0.2261	0.03
0.95	174	-0.7525	0.1801	0.0336
0.95	186	-0.3848	0.2333	0.031
0.95	246	-0.1343	0.2524	0.0301