CLAS Physics Database

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Measurement E151M3000

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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 :	1385 GeV
ε :	0.8894
E_beam :	1.9889 GeV
ε_L:	0.4157

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	0.0558	0.2574	0.03
0.35	66	0.0147	0.253	0.03
0.35	78	-0.1498	0.2631	0.0301
0.65	90	-0.1284	0.242	0.0301
0.65	102	-0.0854	0.1864	0.03
0.65	114	0.0099	0.26	0.03
0.65	258	-0.3107	0.2606	0.0306
0.65	270	0.1493	0.2579	0.0301
0.75	90	-0.0368	0.2201	0.03
0.75	102	0.0779	0.1956	0.03
0.75	114	0.0576	0.2032	0.03
0.75	126	0.3151	0.2105	0.0307
0.75	234	0.2335	0.2322	0.0304
0.75	246	-0.0597	0.2153	0.03
0.75	258	-0.0306	0.212	0.03
0.75	270	-0.1019	0.2145	0.0301
0.75	282	-0.4469	0.2391	0.0313
0.85	90	0.1943	0.2387	0.0303
0.85	102	-0.032	0.1949	0.03
0.85	114	0.2429	0.2185	0.0304
0.85	126	-0.2241	0.2267	0.0303
0.85	138	-0.0548	0.2791	0.03
0.85	222	-0.1349	0.254	0.0301
0.85	234	-0.0622	0.2645	0.03
0.85	246	0.0016	0.2064	0.03
0.85	258	-0.1475	0.2056	0.0301
0.85	270	0	0.2035	0.03
0.85	282	-0.4383	0.1924	0.0313
0.95	66	-0.4889	0.2355	0.0316
0.95	102	-0.0834	0.2518	0.03
0.95	126	0.1362	0.2616	0.0301
0.95	138	-0.2201	0.2517	0.0303
0.95	222	0.01	0.2532	0.03
0.95	234	0.2192	0.2652	0.0303
0.95	246	0.1184	0.219	0.0301
0.95	258	0.0554	0.1924	0.03
0.95	270	-0.6054	0.1625	0.0324
0.95	282	0.0508	0.2045	0.03
0.95	294	-0.5015	0.2036	0.0316