CLAS Physics Database

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Measurement E151M877

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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_UL,
Target spin asymmetry.
Beam: e, polarization: longitudinal
Target: p (Z=1, A=1), polarization: longitudinal
Final state: π⁺n, polarization: none

Q² :	0.1205 GeV²
W :	1565 GeV
ε :	0.8673
E_beam :	2.2596 GeV
ε_L:	0.129

Select data slice:
cos(θ_π⁺) =

Observable quantity measured (Y axis): A_UL,
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_UL	Stat. error	Syst. error
0.55	114	-1.1009	0.485	0.0911
0.65	102	-0.547	0.6571	0.0468
0.65	114	-0.9352	0.6386	0.0683
0.65	138	-0.1097	0.8562	0.0317
0.65	222	0.7744	0.7566	0.0775
0.65	234	0.8638	0.5589	0.0772
0.75	102	-0.2189	0.7851	0.0333
0.75	114	-0.125	0.5646	0.0452
0.75	126	-0.6311	0.8539	0.0655
0.75	210	-1.1698	0.7536	0.0824
0.75	222	-0.6714	0.6497	0.0533
0.75	234	0.2146	0.5411	0.0347
0.85	90	0.3341	0.9369	0.043
0.85	222	1.1892	0.7805	0.1138
0.85	234	0.4635	0.8025	0.0523
0.85	246	-0.6687	0.8057	0.0686
0.95	234	-1.9619	2.0925	0.1835
0.95	246	2.8995	2.3006	0.2693
0.75	282	1.0922	0.7168	0.0777
0.75	294	-0.2491	0.6854	0.0342
0.85	90	-0.2644	0.8101	0.0347
0.85	198	0.0292	0.9765	0.0301
0.85	222	0.2379	0.7527	0.0338
0.85	234	1.085	0.7963	0.0773
0.85	246	1.1295	0.8224	0.08
0.95	246	-0.7643	1.1817	0.0584
0.95	258	1.0273	1.2973	0.0738