CLAS Physics Database

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Measurement E151M399

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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 :	1505 GeV
ε :	0.6429
E_beam :	1.3383 GeV
ε_L:	0.1204

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	Data errors	Systematic errors
0.55	222	1.2625	0.6283	0.0837
0.65	126	1.0608	0.6562	0.0722
0.65	138	-1.0915	0.5889	0.0739
0.65	222	-0.1199	0.5888	0.0309
0.65	234	0.9181	0.5508	0.0643
0.65	246	-0.1866	0.4672	0.0321
0.75	126	-0.9762	0.4943	0.0675
0.75	138	-0.3685	0.6187	0.0377
0.75	222	0.4967	0.4671	0.043
0.75	246	0.397	0.6071	0.0388
0.85	234	-0.0708	0.4832	0.0303
0.85	246	-0.0421	0.5029	0.0301
0.85	258	0.995	0.5326	0.0685
0.95	270	0.2314	0.5358	0.0332
0.55	234	-0.5151	0.7351	0.0432
0.65	210	0.2651	0.9221	0.034
0.65	222	1.6956	1.2101	0.1064
0.65	234	-0.0979	0.7677	0.0306
0.65	246	-0.8779	0.5415	0.0608
0.75	138	-1.2045	0.5645	0.0785
0.75	258	0.4628	0.8598	0.0409
0.85	222	-0.7198	0.6052	0.0527
0.85	234	-0.1065	0.7302	0.0307
0.85	246	1.9411	0.9377	0.1207
0.85	258	0.2708	0.8354	0.0341
0.95	246	0.431	0.8979	0.0397
0.95	270	-0.2816	0.6932	0.0345