CLAS Physics Database

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Measurement E151M262

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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 :	0.0707 GeV²
W :	1295 GeV
ε :	0.8904
E_beam :	1.3383 GeV
ε_L:	0.2949

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	246	0.3914	0.5851	0.0386
0.55	258	0.3896	0.3512	0.0451
0.55	270	-0.2949	0.3418	0.0359
0.65	246	0.2933	0.6919	0.0348
0.65	258	-0.0825	0.5151	0.0304
0.65	270	0.5985	0.5999	0.0469
0.65	282	0.134	0.7064	0.0311
0.75	114	-0.034	0.8863	0.0301
0.75	126	1.0376	0.8291	0.0693
0.75	138	-0.2834	0.671	0.0345
0.75	234	-0.2448	0.5101	0.0334
0.75	246	-0.6063	0.3611	0.0473
0.75	258	0.1902	0.4794	0.0321
0.75	270	0.5194	0.5437	0.0433
0.75	282	-0.4049	0.4771	0.0387
0.85	102	0.8223	1.0173	0.0579
0.85	114	-0.4614	0.4748	0.0409
0.85	126	-0.8433	0.3763	0.059
0.85	138	0.3398	0.561	0.0363
0.85	150	0.7422	0.8245	0.0538
0.85	162	-0.0224	0.6481	0.03
0.85	174	-0.2221	0.5812	0.0328
0.85	186	-0.2737	0.6983	0.0342
0.85	234	-0.367	0.458	0.0373
0.85	246	0.4586	0.5873	0.0408
0.85	258	0.0695	0.4645	0.0303
0.85	270	0.7876	0.5534	0.0561
0.85	282	-0.6112	0.3413	0.0475
0.85	294	0.2763	0.7606	0.0343
0.95	90	0.4645	0.9092	0.041
0.95	114	-0.7756	0.4619	0.0555
0.95	126	-0.3252	0.5626	0.0358
0.95	138	-0.0701	0.7376	0.0303
0.95	150	-1.3752	0.2079	0.0881
0.95	162	-0.6556	0.4626	0.0496
0.95	174	0.254	0.7326	0.0337
0.95	186	-0.5583	0.5143	0.0451
0.95	246	0.549	0.6482	0.0446
0.95	258	1.6441	1.6441	0.1035
0.95	270	-0.4206	0.4336	0.0393
0.95	282	0.3356	0.7901	0.0362
0.55	282	-0.0918	0.5453	0.0305
0.65	126	-1.0688	0.5652	0.0727
0.65	234	0.0031	0.543	0.03
0.65	246	0.4108	0.4564	0.0393
0.65	258	-0.3054	0.3316	0.0355
0.65	270	0.3568	0.3618	0.0373
0.65	282	0.143	0.5137	0.0313
0.75	114	0.0342	0.4339	0.0301
0.75	126	0.4634	0.3795	0.0415
0.75	138	-0.1217	0.4654	0.0309
0.75	222	-0.0209	0.4658	0.03
0.75	234	-0.3239	0.3726	0.0361
0.75	246	0.1261	0.36	0.031
0.75	258	0.2725	0.3526	0.0344
0.75	270	0.2401	0.3202	0.0335
0.75	282	0.3469	0.3843	0.0369
0.75	294	-0.1028	0.5241	0.0307
0.85	102	-0.3188	0.55	0.0359
0.85	114	-0.2372	0.4277	0.0334
0.85	126	0.1624	0.3821	0.0316
0.85	138	0.2744	0.3996	0.0345
0.85	150	0.3349	0.4088	0.0365
0.85	162	0.1539	0.4262	0.0315
0.85	174	-0.3896	0.5181	0.0385
0.85	186	-0.9955	0.401	0.0686
0.85	234	-0.3377	0.4032	0.0366
0.85	246	-0.2643	0.3236	0.0342
0.85	258	-0.0984	0.3783	0.0306
0.85	270	-0.6235	0.3017	0.0489
0.85	282	-0.0865	0.306	0.0305
0.85	294	0.1932	0.5024	0.0323
0.95	90	-0.3707	0.4418	0.0378
0.95	102	0.4365	0.4339	0.0404
0.95	114	0.2979	0.4596	0.0352
0.95	126	-0.0088	0.4007	0.03
0.95	138	-0.1798	0.4924	0.032
0.95	150	-0.6811	0.3791	0.0518
0.95	174	0.2678	0.4484	0.0343
0.95	186	0.168	0.4823	0.0318
0.95	234	-0.3171	0.3701	0.0359
0.95	246	0.1511	0.3538	0.0314
0.95	258	-0.0615	0.3896	0.0302
0.95	270	-0.0914	0.3244	0.0305