CLAS Physics Database

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Measurement E151M3103

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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 :	0.0844 GeV²
W :	1595 GeV
ε :	0.8139
E_beam :	1.9889 GeV
ε_L:	0.0792

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
0.45	78	-0.2922	0.262	0.0306
0.45	282	0.4565	0.2459	0.0314
0.55	222	-0.2151	0.2583	0.0303
0.55	270	-0.0352	0.2419	0.03
0.55	282	0.1474	0.2793	0.0301
0.65	126	-0.1666	0.2519	0.0302
0.65	150	0.0654	0.2551	0.03
0.65	198	0.0955	0.289	0.0301
0.65	210	-0.1968	0.2828	0.0303
0.65	222	-0.1093	0.2154	0.0301
0.65	294	0.5955	0.1807	0.0323
0.75	126	-0.0589	0.2429	0.03
0.75	138	0.0778	0.2547	0.03
0.75	210	0.2283	0.2642	0.0303
0.75	222	-0.1915	0.2908	0.0302
0.75	234	0.2254	0.2067	0.0303
0.75	246	0.2626	0.2697	0.0305
0.75	270	-0.1119	0.2622	0.0301
0.75	282	0.0616	0.2135	0.03
0.75	294	0.0785	0.2155	0.03
0.85	102	0.0785	0.2488	0.03
0.85	114	0.2744	0.26	0.0305
0.85	210	-0.218	0.2712	0.0303
0.85	222	0.0479	0.1942	0.03
0.85	234	-0.2081	0.2083	0.0303
0.85	246	0.0299	0.2462	0.03
0.95	234	-0.0896	0.2867	0.0301