CLAS Physics Database

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Measurement E151M2590

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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 :	0.0071 GeV²
W :	1415 GeV
ε :	0.7202
E_beam :	1.0539 GeV
ε_L:	0.0141

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	42	-0.2501	0.235	0.0304
0.35	54	-0.3225	0.2466	0.0307
0.45	42	0.0821	0.2275	0.03
0.45	54	-0.2593	0.163	0.0304
0.45	222	0.3392	0.2185	0.0308
0.45	234	-0.3356	0.2152	0.0307
0.55	18	-0.1253	0.2498	0.0301
0.55	30	-0.1847	0.2332	0.0302
0.55	42	-0.5805	0.1812	0.0322
0.55	54	0.0329	0.2115	0.03
0.55	222	0.2621	0.2092	0.0305
0.55	234	-0.2093	0.198	0.0303
0.55	246	0.1809	0.238	0.0302
0.65	42	-0.111	0.2562	0.0301
0.65	54	0.1357	0.2051	0.0301
0.65	150	0.1836	0.2628	0.0302
0.65	174	0.0169	0.2561	0.03
0.65	222	-0.1083	0.1923	0.0301
0.65	234	0.1936	0.1633	0.0302
0.65	246	-0.1127	0.2259	0.0301
0.75	222	-0.0737	0.2547	0.03
0.75	234	0.0862	0.203	0.03
0.75	246	0.1517	0.1823	0.0302
0.85	210	-0.4276	0.2424	0.0312
0.85	222	0.2611	0.2023	0.0305
0.85	234	0.0875	0.241	0.0301
0.85	246	-0.0179	0.191	0.03