CLAS Physics Database

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Measurement E151M3175

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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 :	0.0707 GeV²
W :	1235 GeV
ε :	0.9751
E_beam :	2.2596 GeV
ε_L:	0.4745

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
0.45	78	0.2104	0.1569	0.0303
0.55	78	-0.0496	0.1584	0.0301
0.65	270	-0.1245	0.2124	0.0301
0.75	258	0.2334	0.2215	0.0304
0.75	270	0.0585	0.2329	0.03
0.85	114	-0.4951	0.2272	0.0316
0.85	126	-0.0143	0.1992	0.03
0.85	138	-0.4587	0.2304	0.0314
0.85	150	-0.4818	0.2332	0.0315
0.95	126	-0.1257	0.2439	0.0301
0.95	138	-0.1552	0.2454	0.0302
0.95	150	0.2559	0.0302
0.95	162	0.3107	0.2127	0.0306
0.55	270	-0.2355	0.2388	0.0304
0.65	90	-0.2776	0.2343	0.0305
0.65	270	0.0151	0.2323	0.03
0.75	246	-0.0849	0.2273	0.03
0.75	258	-0.1237	0.199	0.0301
0.75	270	-0.2503	0.195	0.0304
0.85	126	-0.1154	0.1993	0.0301
0.85	138	0.0648	0.1927	0.03
0.85	150	0.0928	0.2492	0.0301
0.85	246	0.0177	0.2073	0.03
0.85	258	-0.1155	0.2062	0.0301
0.95	114	0.2609	0.2322	0.0305
0.95	126	-0.2788	0.2311	0.0305
0.95	150	-0.1288	0.1957	0.0301
0.95	162	-0.5972	0.1826	0.0323
0.95	174	0.2569	0.2455	0.0304
0.95	186	-0.0274	0.2475	0.03