CLAS Physics Database

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Measurement E151M2544

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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 :	1325 GeV
ε :	0.7217
E_beam :	1.0539 GeV
ε_L:	0.3089

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
0.55	258	-0.0286	0.2201	0.03
0.55	270	-0.1555	0.1942	0.0302
0.65	246	-0.0352	0.173	0.03
0.65	258	-0.2138	0.2106	0.0303
0.65	270	-0.1455	0.1888	0.0301
0.65	282	-0.3691	0.2088	0.0309
0.75	138	-0.0577	0.2208	0.03
0.75	150	0.1839	0.2371	0.0302
0.75	246	-0.2711	0.187	0.0305
0.75	258	0.0695	0.2254	0.03
0.75	270	-0.0722	0.1995	0.03
0.75	282	-0.2416	0.204	0.0304
0.75	294	-0.0221	0.2524	0.03
0.85	126	0.0474	0.2281	0.03
0.85	138	0.0492	0.2052	0.03
0.85	150	0.0619	0.2195	0.03
0.85	162	-0.1481	0.2031	0.0301
0.85	186	0.0438	0.2158	0.03
0.85	246	-0.0258	0.2496	0.03
0.85	258	-0.2226	0.2015	0.0303
0.85	270	-0.0407	0.2114	0.03
0.85	282	-0.3793	0.1737	0.0309
0.85	294	0.073	0.232	0.03
0.95	102	-0.033	0.2577	0.03
0.95	114	0.1269	0.2624	0.0301
0.95	138	-0.3051	0.2398	0.0306
0.95	162	-0.0992	0.236	0.0301
0.95	174	0.3694	0.2217	0.0309
0.95	258	0.0838	0.2526	0.03