CLAS Physics Database

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Measurement E151M2678

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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 :	0.0143 GeV²
W :	1265 GeV
ε :	0.9379
E_beam :	1.3383 GeV
ε_L:	0.0879

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
0.65	234	0.1342	0.3434	0.0301
0.65	246	0.0327	0.2761	0.03
0.65	258	-0.1997	0.306	0.0303
0.65	270	0.5139	0.3202	0.0317
0.75	162	-0.4246	0.2785	0.0312
0.75	234	0.2746	0.3598	0.0305
0.75	246	-0.358	0.29	0.0308
0.75	258	-0.3401	0.2777	0.0308
0.75	270	-0.6574	0.1978	0.0328
0.85	162	-0.7522	0.2178	0.0336
0.85	234	0.2332	0.3471	0.0304
0.85	246	-0.0391	0.3518	0.03
0.85	258	-0.2742	0.3372	0.0305
0.55	246	-0.2245	0.269	0.0303
0.55	258	-0.0619	0.2723	0.03
0.65	234	0.1381	0.2623	0.0301
0.65	246	-0.2905	0.1942	0.0306
0.65	258	0.047	0.1882	0.03
0.65	270	0.3674	0.2185	0.0309
0.75	150	-0.2187	0.2501	0.0303
0.75	234	-0.0669	0.2744	0.03
0.75	246	-0.0712	0.2087	0.03
0.75	258	-0.0639	0.2241	0.03
0.75	270	-0.2295	0.2044	0.0303
0.85	234	0.0725	0.2673	0.03
0.85	246	-0.0698	0.2458	0.03
0.85	258	0.2075	0.2169	0.0303