CLAS Physics Database

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Measurement E151M1851

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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_LL,

Beam: e, polarization: longitudinal
Target: p (Z=1, A=1), polarization: longitudinal
Final state: π⁺n, polarization: none

Q² :	0.101 GeV²
W :	1535 GeV
ε :	0.8485
E_beam :	1.9889 GeV
ε_L:	0.1213

Select data slice:
cos(θ_π⁺) =

Observable quantity measured (Y axis): A_LL,
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_LL	Stat. error	Syst. error
0.25	66	-0.7736	0.9063	0.0557
0.35	66	-0.0185	0.8486	0.03
0.35	78	0.0943	0.8509	0.0305
0.35	282	-0.8541	0.7389	0.0598
0.35	294	-0.8951	0.7111	0.062
0.45	78	0.5776	0.7484	0.0461
0.45	90	-0.4901	0.9208	0.0422
0.45	270	0.6133	0.7097	0.0478
0.45	282	-0.587	0.7866	0.0465
0.45	294	-0.2093	0.7861	0.0326
0.55	102	-0.4486	0.9782	0.0405
0.55	114	0.6927	0.769	0.0516
0.55	222	1.1883	0.8086	0.078
0.55	234	-0.3096	0.7965	0.0354
0.55	246	0.8186	0.8279	0.058
0.55	258	1.1058	0.8339	0.0734
0.55	270	-1.5093	0.6767	0.0963
0.55	282	-2.3475	2.3475	0.1454
0.65	66	-0.4486	0.8934	0.0405
0.65	78	1.9841	0.725	0.1239
0.65	102	0.1051	0.8682	0.0307
0.65	114	0.6823	0.6908	0.0511
0.65	126	-0.573	0.7662	0.0459
0.65	138	-0.7363	0.7122	0.0538
0.65	210	-0.6392	0.872	0.049
0.65	222	0.9337	0.6409	0.064
0.65	234	0.9496	0.6342	0.0649
0.65	294	-0.2474	0.6282	0.0335
0.65	306	-0.3273	0.8251	0.036
0.75	66	-0.4415	0.9057	0.0402
0.75	102	-1.0583	0.6726	0.0708
0.75	114	-0.9472	0.655	0.0648
0.75	126	-0.6027	0.6471	0.0473
0.75	138	-0.0407	0.638	0.0301
0.75	210	0.4604	0.8704	0.041
0.75	222	-0.692	0.639	0.0516
0.75	234	-0.2246	0.6055	0.0329
0.75	246	0.0777	0.6889	0.0304
0.75	282	1.0872	0.7457	0.0724
0.75	294	0.1614	0.8082	0.0316
0.85	90	0.2475	0.7503	0.0335
0.85	102	-1.1609	0.7083	0.0765
0.85	210	-0.3417	0.6496	0.0365
0.85	222	0.1514	0.6401	0.0314
0.85	234	-0.0773	0.6172	0.0304
0.85	246	0.3077	0.6361	0.0353
0.85	258	0.3066	0.7227	0.0353
0.95	114	0.4599	0.7406	0.0409
0.95	222	-0.8422	0.6609	0.0592
0.95	234	-0.6715	0.5243	0.0506
0.95	246	0.838	0.5723	0.059
0.95	258	-0.5819	0.7249	0.0463