CLAS Physics Database

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Measurement E151M2982

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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 :	1355 GeV
ε :	0.9254
E_beam :	1.9889 GeV
ε_L:	0.3391

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
0.15	294	0.3151	0.2245	0.0307
0.15	306	-0.0064	0.2261	0.03
0.25	66	0.0964	0.2626	0.0301
0.25	78	-0.0965	0.2909	0.0301
0.25	294	-0.0192	0.2127	0.03
0.25	306	-0.0741	0.2643	0.03
0.35	66	-0.1494	0.2218	0.0301
0.35	78	-0.221	0.2117	0.0303
0.35	282	0.0974	0.2458	0.0301
0.35	294	0.1283	0.236	0.0301
0.35	306	-0.3264	0.2406	0.0307
0.45	66	-0.6464	0.1542	0.0327
0.45	78	-0.041	0.2421	0.03
0.45	282	0.1134	0.2624	0.0301
0.45	294	0.2474	0.2199	0.0304
0.55	78	0.0504	0.2154	0.03
0.55	102	-0.4611	0.2278	0.0314
0.55	270	-0.2429	0.2199	0.0304
0.55	282	0.1411	0.2559	0.0301
0.65	102	0.0029	0.2077	0.03
0.65	114	-0.6539	0.1751	0.0327
0.65	126	0.0836	0.2848	0.03
0.65	246	0.209	0.2658	0.0303
0.65	258	0.0707	0.2016	0.03
0.65	270	-0.0302	0.2082	0.03
0.65	282	0.0681	0.2616	0.03
0.75	90	0.0048	0.2069	0.03
0.75	102	-0.129	0.1783	0.0301
0.75	114	0.1964	0.1559	0.0303
0.75	126	0.0134	0.1843	0.03
0.75	138	-0.186	0.2274	0.0302
0.75	222	0.1413	0.2243	0.0301
0.75	234	-0.003	0.1884	0.03
0.75	246	0.2755	0.1799	0.0305
0.75	258	-0.1243	0.1741	0.0301
0.75	270	0.1299	0.1849	0.0301
0.75	282	-0.1462	0.2102	0.0301
0.85	78	0.0154	0.288	0.03
0.85	90	0.1195	0.2465	0.0301
0.85	102	0.1113	0.1481	0.0301
0.85	114	-0.1571	0.1602	0.0302
0.85	126	-0.0018	0.1689	0.03
0.85	138	-0.0397	0.1859	0.03
0.85	150	0.2472	0.2316	0.0304
0.85	162	-0.1041	0.2552	0.0301
0.85	210	-0.0433	0.2614	0.03
0.85	222	0.018	0.1969	0.03
0.85	234	-0.0817	0.172	0.03
0.85	246	-0.0964	0.1611	0.0301
0.85	258	-0.326	0.1848	0.0307
0.85	270	-0.1629	0.1733	0.0302
0.85	282	-0.1169	0.1978	0.0301
0.95	78	0.1019	0.2472	0.0301
0.95	90	-0.2145	0.2611	0.0303
0.95	114	0.4836	0.197	0.0315
0.95	126	-0.192	0.2752	0.0302
0.95	138	0.352	0.2199	0.0308
0.95	150	-0.0105	0.2624	0.03
0.95	210	-0.2561	0.2393	0.0304
0.95	234	-0.5627	0.1658	0.032
0.95	246	-0.092	0.1847	0.0301
0.95	258	-0.0575	0.1938	0.03
0.95	270	-0.1229	0.1789	0.0301
0.95	282	-0.2237	0.2271	0.0303