CLAS Physics Database

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Measurement E151M3118

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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 :	0.0707 GeV²
W :	1625 GeV
ε :	0.7962
E_beam :	1.9889 GeV
ε_L:	0.0592

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	282	-0.2937	0.2692	0.0306
0.45	78	0.0174	0.2444	0.03
0.45	270	0.0292	0.2185	0.03
0.55	90	-0.5092	0.2437	0.0317
0.55	270	-0.2084	0.2553	0.0303
0.65	114	-0.1653	0.2138	0.0302
0.65	126	-0.0446	0.2304	0.03
0.65	150	-0.1977	0.265	0.0303
0.65	210	-0.0622	0.2633	0.03
0.65	222	0.3496	0.2221	0.0308
0.65	270	-0.0382	0.2701	0.03
0.65	282	-0.1981	0.2559	0.0303
0.65	294	-0.2413	0.2646	0.0304
0.75	66	0.546	0.225	0.0319
0.75	114	0.1117	0.275	0.0301
0.75	126	-0.1794	0.2435	0.0302
0.75	138	0.1678	0.2591	0.0302
0.75	210	-0.19	0.2434	0.0302
0.75	222	-0.055	0.2319	0.03
0.75	234	0.0829	0.2538	0.03
0.75	270	-0.1199	0.2973	0.0301
0.75	282	-0.0242	0.213	0.03
0.85	102	0.1895	0.2398	0.0302
0.85	114	-0.1215	0.2117	0.0301
0.85	198	-0.0494	0.2172	0.03
0.85	210	-0.0639	0.2369	0.03
0.85	222	-0.5472	0.1888	0.0319
0.85	234	-0.0385	0.2214	0.03
0.85	246	0.0352	0.2558	0.03
0.95	222	0.5196	0.2522	0.0317