CLAS Physics Database

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Measurement E151M3119

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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 :	0.0844 GeV²
W :	1625 GeV
ε :	0.7903
E_beam :	1.9889 GeV
ε_L:	0.0691

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
0.45	270	0.054	0.2789	0.03
0.55	126	0.1618	0.2506	0.0302
0.55	270	0.0136	0.2448	0.03
0.55	282	-0.4496	0.2183	0.0313
0.65	126	0.3565	0.2113	0.0308
0.65	138	-0.0907	0.2732	0.0301
0.65	222	0.2561	0.2385	0.0304
0.65	294	0.0249	0.2649	0.03
0.75	138	0.031	0.2622	0.03
0.75	198	-0.3707	0.2106	0.0309
0.75	210	0.1168	0.2425	0.0301
0.75	222	0.1935	0.2112	0.0302
0.75	270	0.3264	0.2446	0.0307
0.75	282	-0.054	0.2435	0.03
0.75	294	0.1894	0.2745	0.0302
0.85	102	-0.19	0.2731	0.0302
0.85	114	0.4041	0.2138	0.0311
0.85	198	0.1682	0.2686	0.0302
0.85	210	-0.0284	0.2625	0.03
0.85	222	-0.3459	0.2224	0.0308
0.85	234	-0.1522	0.2396	0.0302
0.95	222	0.5734	0.2156	0.0321