CLAS Physics Database

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Measurement E151M3619

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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 :	1805 GeV
ε :	0.8401
E_beam :	2.999 GeV
ε_L:	0.0571

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	186	-0.3744	0.2466	0.0309
0.55	210	-0.1264	0.2617	0.0301
0.65	138	-0.1571	0.2547	0.0302
0.65	186	-0.0765	0.2804	0.03
0.65	198	-0.4884	0.2008	0.0316
0.65	210	0.5835	0.2129	0.0322
0.75	102	-0.4094	0.2227	0.0311
0.75	114	0.2477	0.2407	0.0304
0.75	126	-0.109	0.2786	0.0301
0.75	198	-0.1904	0.25	0.0302
0.75	210	-0.0228	0.2123	0.03
0.75	222	-0.0415	0.2344	0.03
0.75	270	-0.1489	0.2707	0.0301
0.75	282	-0.0284	0.2446	0.03
0.85	90	-0.2335	0.2167	0.0304
0.85	102	-0.1958	0.1992	0.0303
0.85	114	0.49	0.1665	0.0316
0.85	126	0.1197	0.2607	0.0301
0.85	174	-0.3605	0.2289	0.0309
0.85	186	-0.2639	0.2123	0.0305
0.85	198	0.0084	0.1824	0.03
0.85	210	-0.2291	0.2134	0.0303
0.85	222	-0.1222	0.1981	0.0301
0.85	234	0.3318	0.202	0.0307
0.95	186	0.0355	0.2393	0.03
0.95	198	-0.1224	0.2377	0.0301
0.95	210	-0.3524	0.2155	0.0308
0.95	234	-0.2891	0.2494	0.0306