CLAS Physics Database

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Measurement E151M951

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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 :	0.205 GeV²
W :	1235 GeV
ε :	0.9737
E_beam :	2.999 GeV
ε_L:	0.9733

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	0.0232	0.5623	0.03
0.25	54	0.3825	0.6945	0.041
0.25	66	0.3843	0.4987	0.0411
0.35	66	-0.746	0.365	0.0622
0.35	78	0.4787	0.6031	0.0461
0.35	282	0.3594	0.6019	0.0399
0.35	294	-0.5651	0.5275	0.051
0.45	66	-0.7116	0.4592	0.06
0.45	78	0.2094	0.5583	0.0337
0.45	282	-0.4078	0.3943	0.0423
0.45	294	-0.179	0.398	0.0327
0.55	66	-0.9558	0.4875	0.076
0.55	78	-1.4756	0.4031	0.1119
0.55	270	1.2269	0.5935	0.0946
0.55	282	0.721	0.4146	0.0606
0.55	294	-0.3157	0.3526	0.0378
0.65	66	-0.8416	0.482	0.0684
0.65	78	-0.1089	0.5003	0.031
0.65	90	-0.0744	0.6315	0.0305
0.65	270	-0.3312	0.3115	0.0386
0.65	282	-0.1652	0.2905	0.0323
0.65	294	0.1975	0.3433	0.0333
0.75	66	0.1954	0.4627	0.0332
0.75	78	0.0772	0.4051	0.0305
0.75	90	-0.2696	0.3564	0.0359
0.75	102	0.3672	0.4742	0.0403
0.75	114	0.9096	0.8092	0.0729
0.75	258	0.0433	0.405	0.0302
0.75	270	-0.0231	0.3368	0.03
0.75	282	-0.2118	0.3236	0.0338
0.75	294	0.0843	0.4047	0.0306
0.75	306	-0.1159	0.5688	0.0312
0.85	54	0.0266	0.5692	0.0301
0.85	66	-0.2845	0.319	0.0365
0.85	78	0.0264	0.3365	0.0301
0.85	90	0.2501	0.3288	0.0351
0.85	102	0.2797	0.3387	0.0363
0.85	114	-0.5403	0.3818	0.0496
0.85	126	0.4788	0.7277	0.0461
0.85	246	-0.4622	0.5035	0.0452
0.85	258	0.2046	0.4761	0.0335
0.85	270	0.0387	0.3849	0.0301
0.85	282	-0.1201	0.3314	0.0313
0.85	294	-0.3663	0.3745	0.0402
0.85	306	-0.3623	0.4801	0.04
0.95	42	-0.0686	0.5776	0.0304
0.95	54	0.6559	0.5466	0.0566
0.95	66	0.3936	0.4209	0.0416
0.95	78	-0.2869	0.3577	0.0366
0.95	90	-0.1927	0.3353	0.0331
0.95	102	-0.0458	0.3817	0.0302
0.95	114	-0.4624	0.3747	0.0452
0.95	126	-0.1904	0.3954	0.0331
0.95	138	0.6413	0.5241	0.0557
0.95	150	0.1662	0.5239	0.0324
0.95	162	-0.3309	0.561	0.0385
0.95	174	0.7764	0.7594	0.0642
0.95	210	-0.0026	0.6477	0.03
0.95	234	1.0707	0.5784	0.0838
0.95	246	0.865	0.5958	0.07
0.95	258	-0.4852	0.4292	0.0465
0.95	270	0.7429	0.5157	0.062
0.95	282	0.4378	0.5066	0.0439
0.95	294	-0.1797	0.4954	0.0328
0.95	306	0.2127	0.6028	0.0338