CLAS Physics Database

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Measurement E151M525

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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 :	0.1715 GeV²
W :	1325 GeV
ε :	0.9208
E_beam :	1.9889 GeV
ε_L:	0.5076

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
0.25	66	0.576	0.5913	0.0463
0.25	306	-0.3174	0.5465	0.0357
0.35	66	-0.1111	0.489	0.0308
0.35	78	-0.4108	0.532	0.0391
0.35	294	-0.1106	0.617	0.0308
0.45	66	0.8264	0.6433	0.0588
0.45	78	0.2402	0.5359	0.0334
0.45	294	0.7889	0.6983	0.0568
0.55	66	-0.1662	0.5867	0.0317
0.55	270	0.1689	0.607	0.0317
0.65	90	-0.7576	0.4907	0.0552
0.65	102	1.3118	0.5644	0.0857
0.65	114	-0.7205	0.4982	0.0533
0.65	258	-0.8309	0.4032	0.059
0.65	270	-0.1887	0.4374	0.0321
0.65	282	-0.076	0.464	0.0304
0.75	78	-0.174	0.5448	0.0318
0.75	90	0.5597	0.5469	0.0455
0.75	102	-0.13	0.4033	0.031
0.75	114	0.5437	0.4949	0.0448
0.75	234	0.6463	0.6554	0.0496
0.75	246	-0.3414	0.4987	0.0366
0.75	258	0.0017	0.3831	0.03
0.75	270	-0.2904	0.3825	0.0349
0.75	282	-0.6168	0.3581	0.0482
0.75	294	-0.7402	0.4786	0.0543
0.85	78	1.2573	0.7012	0.0825
0.85	90	-0.0323	0.4261	0.0301
0.85	102	-0.0774	0.3857	0.0304
0.85	114	0.6454	0.4741	0.0496
0.85	126	0.4572	0.4566	0.041
0.85	138	-0.3085	0.5332	0.0354
0.85	210	-0.6186	0.538	0.0483
0.85	222	-0.4331	0.5514	0.04
0.85	234	-0.0498	0.4248	0.0302
0.85	246	0.0637	0.4688	0.0303
0.85	258	0.9037	0.4591	0.0629
0.85	270	-0.9029	0.2733	0.0628
0.85	282	-0.0867	0.343	0.0305
0.85	294	0.1108	0.4675	0.0308
0.95	90	-0.1489	0.5373	0.0314
0.95	102	-0.4237	0.4129	0.0396
0.95	114	0.8881	0.4412	0.0621
0.95	126	-0.2525	0.4181	0.0337
0.95	138	-0.3974	0.4134	0.0386
0.95	150	0.2205	0.5539	0.0329
0.95	162	-0.672	0.4972	0.0509
0.95	210	-0.1008	0.5215	0.0306
0.95	246	-0.8101	0.3282	0.0579
0.95	258	0.1158	0.3929	0.0308
0.95	270	0.2018	0.4013	0.0324
0.95	282	0.0392	0.4012	0.0301
0.95	294	-0.8011	0.4176	0.0575