CLAS Physics Database

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Measurement E151M3077

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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 :	0.205 GeV²
W :	1535 GeV
ε :	0.8083
E_beam :	1.9889 GeV
ε_L:	0.2065

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	0.1609	0.2611	0.0302
0.35	294	-0.1584	0.2554	0.0302
0.45	282	-0.1593	0.2731	0.0302
0.45	294	0.3096	0.2563	0.0306
0.55	114	-0.0977	0.2673	0.0301
0.55	306	0.1929	0.2554	0.0302
0.65	102	-0.0959	0.2522	0.0301
0.65	114	0.0123	0.2178	0.03
0.65	222	-0.2887	0.2534	0.0306
0.65	234	0.0525	0.2518	0.03
0.75	102	0.3977	0.2091	0.031
0.75	114	-0.0156	0.2276	0.03
0.75	138	-0.1524	0.2832	0.0302
0.75	210	0.1454	0.2536	0.0301
0.75	222	-0.1011	0.2713	0.0301
0.75	234	-0.0465	0.2586	0.03
0.75	246	0.2655	0.2217	0.0305
0.75	258	-0.2032	0.2806	0.0303
0.85	78	0.5332	0.2362	0.0318
0.85	90	-0.113	0.2295	0.0301
0.85	138	0.4548	0.2172	0.0313
0.85	210	-0.2451	0.2436	0.0304
0.85	222	0.1083	0.2127	0.0301
0.85	234	0.5859	0.1791	0.0322
0.85	246	0.1953	0.2052	0.0303
0.85	258	-0.1564	0.2337	0.0302
0.95	222	0.1293	0.2677	0.0301
0.95	246	0.1591	0.2618	0.0302
0.95	258	-0.2595	0.2242	0.0304
0.95	270	-0.1099	0.2475	0.0301
0.95	282	-0.0276	0.2646	0.03