CLAS Physics Database

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Measurement E151M3227

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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 :	0.1715 GeV²
W :	1355 GeV
ε :	0.933
E_beam :	2.2596 GeV
ε_L:	0.4436

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
0.25	66	0.1892	0.2308	0.0302
0.45	282	-0.1741	0.2425	0.0302
0.55	270	0.383	0.2454	0.031
0.65	102	-0.2454	0.2183	0.0304
0.65	114	-0.2705	0.2392	0.0305
0.65	270	-0.0366	0.2277	0.03
0.75	90	0.4379	0.2038	0.0313
0.75	102	-0.0374	0.205	0.03
0.75	114	-0.2884	0.2097	0.0305
0.75	126	-0.4115	0.2201	0.0311
0.75	246	-0.0984	0.221	0.0301
0.75	258	-0.0631	0.2237	0.03
0.75	270	-0.3525	0.1846	0.0308
0.75	282	-0.1705	0.2519	0.0302
0.85	66	0.1613	0.2349	0.0302
0.85	90	-0.1574	0.2567	0.0302
0.85	102	0.0536	0.1998	0.03
0.85	114	-0.0908	0.1932	0.0301
0.85	126	-0.2769	0.2045	0.0305
0.85	222	0.2265	0.2428	0.0303
0.85	234	-0.2172	0.2059	0.0303
0.85	246	0.3149	0.2126	0.0307
0.85	258	0.0258	0.1715	0.03
0.85	270	0.1043	0.1998	0.0301
0.85	282	0.2786	0.1847	0.0305
0.85	294	0.1764	0.2283	0.0302
0.95	102	-0.2559	0.2488	0.0304
0.95	114	0.1995	0.2169	0.0303
0.95	234	0.3406	0.2024	0.0308
0.95	258	0.0656	0.2655	0.03
0.95	270	0.0291	0.2364	0.03
0.95	282	0.2092	0.2007	0.0303
0.95	294	-0.2894	0.2176	0.0306
0.25	294	0.1817	0.2559	0.0302
0.25	306	0.1995	0.2551	0.0303
0.45	66	0.3632	0.2376	0.0309
0.65	102	-0.3506	0.2323	0.0308
0.65	270	-0.112	0.2571	0.0301
0.75	90	-0.0471	0.2308	0.03
0.75	102	-0.0375	0.2255	0.03
0.75	114	-0.1748	0.225	0.0302
0.75	234	0.1008	0.256	0.0301
0.75	246	-0.4882	0.2329	0.0315
0.75	258	0.0233	0.2123	0.03
0.75	270	0.1689	0.2083	0.0302
0.75	282	-0.1468	0.2457	0.0301
0.85	90	-0.1703	0.2166	0.0302
0.85	102	-0.1327	0.2139	0.0301
0.85	114	0.1674	0.1831	0.0302
0.85	126	0.1285	0.1988	0.0301
0.85	222	0.1995	0.2487	0.0303
0.85	234	-0.2294	0.2139	0.0303
0.85	246	0.4346	0.1968	0.0312
0.85	258	-0.0677	0.1968	0.03
0.85	270	-0.1702	0.1721	0.0302
0.85	282	-0.0388	0.2278	0.03
0.85	294	-0.3615	0.2018	0.0309
0.95	114	0.5683	0.2046	0.0321
0.95	234	-0.2329	0.2643	0.0304
0.95	258	-0.0104	0.2444	0.03
0.95	270	-0.238	0.2128	0.0304
0.95	282	-0.1125	0.1957	0.0301
0.95	294	0.0488	0.2277	0.03