CLAS Physics Database

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Measurement E151M3574

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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 :	0.4155 GeV²
W :	1685 GeV
ε :	0.8348
E_beam :	2.999 GeV
ε_L:	0.2167

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	102	0.1576	0.243	0.0302
0.55	306	0.1744	0.2813	0.0302
0.65	102	-0.0549	0.2676	0.03
0.65	114	0.151	0.2723	0.0302
0.65	222	-0.3345	0.2538	0.0307
0.75	78	0.4457	0.2453	0.0313
0.75	222	0.0014	0.2773	0.03
0.75	234	0.3164	0.2823	0.0307
0.85	66	0.2177	0.2108	0.0303
0.85	78	-0.197	0.2428	0.0303
0.85	90	0.1818	0.2814	0.0302
0.85	198	0.3318	0.2444	0.0307
0.85	210	-0.3073	0.2421	0.0306
0.85	222	-0.535	0.2082	0.0319
0.85	234	0.2993	0.2177	0.0306
0.85	246	-0.0708	0.1987	0.03
0.85	258	-0.7053	0.1684	0.0332
0.85	270	0.2721	0.2296	0.0305
0.95	198	0.0666	0.2406	0.03
0.95	210	-0.4338	0.2281	0.0312
0.95	222	0.1068	0.2285	0.0301
0.95	234	0.0411	0.2139	0.03
0.95	246	-0.3633	0.2347	0.0309
0.95	258	0.0553	0.2214	0.03
0.95	270	0.0096	0.2364	0.03
0.95	282	-0.0755	0.2122	0.03
0.95	294	-0.4362	0.2426	0.0312