CLAS Physics Database

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Measurement E151M2620

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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 :	0.0496 GeV²
W :	1445 GeV
ε :	0.6115
E_beam :	1.0539 GeV
ε_L:	0.0676

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	42	0.213	0.2256	0.0303
0.25	54	0.2204	0.2238	0.0303
0.35	42	-0.2585	0.2245	0.0304
0.35	54	-0.3473	0.1805	0.0308
0.45	30	0.045	0.2395	0.03
0.45	42	0.0346	0.2277	0.03
0.45	54	-0.0351	0.2083	0.03
0.45	234	-0.1815	0.2367	0.0302
0.45	246	0.0968	0.2212	0.0301
0.45	258	0.1937	0.2081	0.0302
0.55	42	-0.1446	0.2405	0.0301
0.55	150	-0.0649	0.217	0.03
0.55	162	0.1726	0.2382	0.0302
0.55	222	-0.0153	0.1944	0.03
0.55	234	-0.076	0.1885	0.03
0.55	246	0.1229	0.151	0.0301
0.55	258	0.0267	0.1627	0.03
0.55	270	-0.0945	0.2681	0.0301
0.65	150	0.0215	0.2063	0.03
0.65	162	0.3742	0.2188	0.0309
0.65	174	-0.2764	0.2156	0.0305
0.65	186	-0.0037	0.2639	0.03
0.65	210	-0.1971	0.2346	0.0303
0.65	222	-0.1372	0.1945	0.0301
0.65	234	-0.1446	0.1542	0.0301
0.65	246	-0.1927	0.1537	0.0302
0.65	258	-0.2169	0.165	0.0303
0.75	138	0.2625	0.1955	0.0305
0.75	150	-0.0586	0.2272	0.03
0.75	162	0.1773	0.1963	0.0302
0.75	174	0.3463	0.2214	0.0308
0.75	186	-0.0366	0.249	0.03
0.75	234	0.1502	0.157	0.0302
0.75	246	-0.3152	0.1436	0.0307
0.75	258	0.1382	0.1547	0.0301
0.75	270	-0.2035	0.2299	0.0303
0.85	222	-0.0521	0.1962	0.03
0.85	234	-0.0105	0.1805	0.03
0.85	246	0.1365	0.1774	0.0301
0.85	258	-0.0706	0.1621	0.03
0.85	270	0.0493	0.2015	0.03
0.95	246	-0.2932	0.2487	0.0306
0.95	258	-0.2928	0.256	0.0306