CLAS Physics Database

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Measurement E151M3608

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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 :	0.1435 GeV²
W :	1775 GeV
ε :	0.8502
E_beam :	2.999 GeV
ε_L:	0.0737

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
0.65	54	0.1645	0.2676	0.0302
0.65	114	-0.1801	0.2411	0.0302
0.65	186	0.0925	0.2745	0.0301
0.65	198	-0.4866	0.217	0.0315
0.65	222	-0.1232	0.276	0.0301
0.65	282	-0.1328	0.2194	0.0301
0.65	294	0.0733	0.2808	0.03
0.75	102	0.0767	0.2418	0.03
0.75	186	-0.009	0.2607	0.03
0.75	198	-0.0189	0.2328	0.03
0.75	210	-0.0985	0.2225	0.0301
0.75	222	-0.3413	0.2472	0.0308
0.75	234	-0.253	0.2374	0.0304
0.75	270	-0.1378	0.2397	0.0301
0.75	282	-0.3194	0.2091	0.0307
0.75	294	-0.353	0.2432	0.0308
0.85	90	0.0455	0.202	0.03
0.85	102	0.0961	0.1725	0.0301
0.85	114	-0.0063	0.1805	0.03
0.85	126	-0.1793	0.2513	0.0302
0.85	174	0.0845	0.2506	0.03
0.85	186	-0.0688	0.2241	0.03
0.85	198	-0.0629	0.191	0.03
0.85	210	0.215	0.1942	0.0303
0.85	222	-0.0978	0.1882	0.0301
0.85	234	0.0624	0.2509	0.03
0.85	246	0.0467	0.2285	0.03
0.95	198	0.1159	0.2617	0.0301
0.95	210	-0.1366	0.2107	0.0301
0.95	222	0.0157	0.2377	0.03
0.95	234	-0.1858	0.2519	0.0302