CLAS Physics Database

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Measurement E151M953

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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 :	0.2915 GeV²
W :	1235 GeV
ε :	0.9649
E_beam :	2.999 GeV
ε_L:	1.1298

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
0.15	66	-0.0613	0.5866	0.0303
0.25	66	-0.235	0.4979	0.0346
0.25	294	0.2138	0.6368	0.0338
0.35	66	0.0858	0.5259	0.0306
0.35	282	0.3251	0.5922	0.0383
0.35	294	0.1021	0.5389	0.0309
0.45	270	0.7875	0.7718	0.0649
0.45	282	-0.3491	0.477	0.0394
0.45	294	1.3005	0.4583	0.0997
0.55	78	-0.397	0.6296	0.0417
0.55	282	0.0501	0.4951	0.0302
0.55	294	-0.5218	0.3779	0.0485
0.65	66	-0.7737	0.4902	0.064
0.65	78	-0.4877	0.5114	0.0466
0.65	90	0.3562	0.5671	0.0397
0.65	270	0.5953	0.4878	0.0528
0.65	282	0.3791	0.4178	0.0408
0.65	294	0.1965	0.3965	0.0333
0.65	306	-0.0856	0.5994	0.0306
0.75	54	-0.5052	0.5502	0.0476
0.75	66	-0.0928	0.4573	0.0308
0.75	78	-0.3244	0.4792	0.0382
0.75	90	0.688	0.5232	0.0586
0.75	102	0.0014	0.5523	0.03
0.75	258	-0.0906	0.6545	0.0307
0.75	270	1.1829	0.5515	0.0915
0.75	282	-0.0123	0.3872	0.03
0.75	294	-0.227	0.387	0.0343
0.75	306	-0.2564	0.513	0.0354
0.85	54	0.0609	0.5181	0.0303
0.85	66	-0.4315	0.3548	0.0435
0.85	78	-0.2066	0.3599	0.0336
0.85	90	-0.547	0.3386	0.05
0.85	102	-0.1717	0.418	0.0325
0.85	114	-0.264	0.509	0.0357
0.85	246	0.6458	0.7125	0.0559
0.85	258	0.0395	0.543	0.0301
0.85	270	0.736	0.5085	0.0616
0.85	282	0.1543	0.4117	0.0321
0.85	294	-0.5012	0.3921	0.0473
0.85	306	0.3702	0.4276	0.0404
0.95	42	1.2759	0.6961	0.098
0.95	54	0.192	0.5015	0.0331
0.95	66	0.3834	0.5494	0.041
0.95	78	-0.6086	0.38	0.0537
0.95	90	0.2905	0.549	0.0368
0.95	102	-0.2891	0.4365	0.0367
0.95	114	0.6709	0.5445	0.0575
0.95	126	-0.591	0.437	0.0526
0.95	138	-0.845	0.5117	0.0687
0.95	258	0.0705	0.5913	0.0304
0.95	282	-0.3709	0.5465	0.0404
0.95	294	0.6742	0.5921	0.0577