CLAS Physics Database

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Measurement E151M2480

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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 :	1235 GeV
ε :	0.8194
E_beam :	1.0539 GeV
ε_L:	0.5937

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
0.05	42	0.1243	0.2407	0.0301
0.45	270	0.0424	0.2384	0.03
0.45	282	0.3043	0.2331	0.0306
0.45	294	-0.3247	0.221	0.0307
0.55	258	-0.4855	0.2364	0.0315
0.55	270	0.1039	0.1972	0.0301
0.55	282	-0.2474	0.1772	0.0304
0.55	294	0.1364	0.2558	0.0301
0.65	258	-0.1809	0.2044	0.0302
0.65	270	0.0873	0.1866	0.0301
0.65	282	-0.2939	0.1894	0.0306
0.65	294	-0.218	0.2616	0.0303
0.75	246	0.1635	0.2251	0.0302
0.75	258	-0.0441	0.2096	0.03
0.75	270	0.2171	0.1889	0.0303
0.75	282	-0.1886	0.2013	0.0302
0.75	294	0.0684	0.2404	0.03
0.85	114	-0.3295	0.2612	0.0307
0.85	138	0.1471	0.2108	0.0301
0.85	150	-0.4539	0.1821	0.0313
0.85	162	-0.3132	0.2099	0.0306
0.85	174	0.111	0.2451	0.0301
0.85	258	0.0367	0.2429	0.03
0.85	282	-0.0385	0.2406	0.03
0.95	126	0.2846	0.1912	0.0305
0.95	138	-0.0029	0.2557	0.03
0.95	150	-0.4621	0.2248	0.0314
0.95	162	0.2917	0.2077	0.0306
0.95	186	-0.0326	0.2503	0.03