CLAS Physics Database

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Measurement E151M2942

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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 :	0.2915 GeV²
W :	1265 GeV
ε :	0.9062
E_beam :	1.9889 GeV
ε_L:	0.9096

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
0.25	66	-0.2029	0.227	0.0303
0.35	66	0.4545	0.2306	0.0313
0.55	282	-0.4178	0.2271	0.0311
0.65	270	-0.0752	0.2365	0.03
0.65	282	-0.4155	0.1944	0.0311
0.65	294	0.1266	0.2613	0.0301
0.75	78	-0.3885	0.2888	0.031
0.75	90	-0.0711	0.2274	0.03
0.75	102	0.2054	0.2329	0.0303
0.75	258	-0.2003	0.2496	0.0303
0.75	270	0.1688	0.259	0.0302
0.75	282	-0.1577	0.2409	0.0302
0.75	294	-0.2391	0.2566	0.0304
0.85	66	0.3843	0.2521	0.031
0.85	78	-0.141	0.2047	0.0301
0.85	90	-0.233	0.2831	0.0304
0.85	102	-0.1244	0.251	0.0301
0.85	114	-0.0092	0.2483	0.03
0.85	246	0.1195	0.2633	0.0301
0.85	258	-0.2441	0.2597	0.0304
0.85	270	-0.585	0.229	0.0322
0.85	282	0.2177	0.2178	0.0303
0.85	294	0.094	0.2365	0.0301
0.95	90	0.2547	0.2352	0.0304
0.95	126	0.0541	0.2362	0.03
0.95	150	-0.1563	0.2876	0.0302
0.95	294	-0.4215	0.2307	0.0312