CLAS Physics Database

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Measurement E151M2939

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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 :	1265 GeV
ε :	0.9373
E_beam :	1.9889 GeV
ε_L:	0.7126

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	66	0.0404	0.247	0.03
0.25	66	0.0345	0.225	0.03
0.35	66	-0.0845	0.1924	0.03
0.35	78	0.1344	0.2456	0.0301
0.45	66	0.1842	0.2158	0.0302
0.45	78	0.0823	0.1976	0.03
0.45	282	0.4399	0.2093	0.0313
0.55	270	0.0226	0.2037	0.03
0.55	282	-0.3555	0.1735	0.0308
0.65	102	0.2058	0.276	0.0303
0.65	258	-0.021	0.2777	0.03
0.65	270	0.0403	0.1918	0.03
0.65	282	-0.3567	0.1658	0.0308
0.75	90	-0.0326	0.2204	0.03
0.75	102	0.0393	0.2091	0.03
0.75	114	0.2207	0.2461	0.0303
0.75	258	-0.1953	0.1636	0.0303
0.75	270	-0.2332	0.2033	0.0304
0.75	282	-0.1747	0.1661	0.0302
0.75	294	-0.1446	0.2247	0.0301
0.85	78	-0.4668	0.2104	0.0314
0.85	90	-0.0396	0.1789	0.03
0.85	102	0.3695	0.1873	0.0309
0.85	114	0.1219	0.1876	0.0301
0.85	126	0.1551	0.1901	0.0302
0.85	138	-0.2082	0.2398	0.0303
0.85	246	-0.1691	0.2028	0.0302
0.85	258	0.0213	0.2063	0.03
0.85	270	0.1117	0.1818	0.0301
0.85	282	-0.2639	0.1976	0.0305
0.85	294	0.3588	0.2148	0.0308
0.95	78	-0.1567	0.2408	0.0302
0.95	90	-0.5759	0.1919	0.0321
0.95	102	-0.0015	0.2076	0.03
0.95	114	0.3121	0.1795	0.0306
0.95	126	0.2058	0.2048	0.0303
0.95	138	-0.2999	0.209	0.0306
0.95	150	0.0441	0.2368	0.03
0.95	162	-0.1764	0.2886	0.0302
0.95	246	-0.0972	0.2836	0.0301
0.95	258	-0.2269	0.2784	0.0303
0.95	270	-0.1488	0.2212	0.0301