CLAS Physics Database

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Measurement E151M3385

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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 :	0.205 GeV²
W :	1205 GeV
ε :	0.9761
E_beam :	2.999 GeV
ε_L:	1.1684

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
0.35	66	-0.0003	0.2581	0.03
0.45	282	-0.0081	0.2832	0.03
0.55	282	-0.1366	0.2016	0.0301
0.65	270	-0.6622	0.1942	0.0328
0.65	282	0.0613	0.1923	0.03
0.65	294	-0.2031	0.2027	0.0303
0.75	66	-0.1633	0.2456	0.0302
0.75	78	0.027	0.2748	0.03
0.75	90	0.0503	0.2494	0.03
0.75	258	-0.4871	0.2502	0.0315
0.75	270	-0.0743	0.2278	0.03
0.75	282	-0.1847	0.1856	0.0302
0.75	294	-0.2719	0.2156	0.0305
0.85	66	0.1004	0.1851	0.0301
0.85	78	0.3867	0.1912	0.031
0.85	90	-0.0587	0.1821	0.03
0.85	102	-0.1982	0.1887	0.0303
0.85	114	0.4725	0.2246	0.0315
0.85	258	-0.2349	0.276	0.0304
0.85	270	-0.4877	0.2127	0.0315
0.85	282	-0.2886	0.2081	0.0306
0.85	294	-0.3635	0.2577	0.0309
0.95	54	0.1243	0.2343	0.0301
0.95	66	0.3439	0.2075	0.0308
0.95	78	-0.0029	0.2258	0.03
0.95	90	0.3854	0.1896	0.031
0.95	102	0.2554	0.2338	0.0304
0.95	114	-0.0478	0.2041	0.03
0.95	126	0.2866	0.2224	0.0305