CLAS Physics Database

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Measurement E151M670

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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 :	0.0348 GeV²
W :	1625 GeV
ε :	0.8115
E_beam :	1.9889 GeV
ε_L:	0.0309

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
0.35	78	-1.082	0.5892	0.0727
0.35	270	0.8251	0.6319	0.0587
0.35	282	0.2126	0.6795	0.0327
0.45	18	-0.0613	0.7165	0.0302
0.45	30	-0.4445	0.7285	0.0405
0.45	66	1.4064	0.9512	0.0911
0.45	78	1.0524	0.7387	0.071
0.45	258	0.0547	0.7094	0.0302
0.45	270	-0.8148	0.5255	0.0582
0.45	282	0.1529	0.6751	0.0314
0.45	330	-0.4683	0.7229	0.0415
0.55	78	1.3006	0.8443	0.085
0.55	90	-1.1398	0.6566	0.0759
0.55	114	0.785	0.7818	0.0566
0.55	126	-0.5696	0.5641	0.046
0.55	138	0.0499	0.7986	0.0302
0.55	150	-1.0725	0.6691	0.0721
0.55	198	0.4348	0.7474	0.0401
0.55	210	0.1017	0.7665	0.0306
0.55	222	0.6016	0.771	0.0475
0.55	258	-0.3162	0.6291	0.0357
0.55	270	0.8895	0.6561	0.0621
0.55	282	0.1312	0.7983	0.0311
0.65	78	-0.5163	0.7081	0.0436
0.65	114	0.2195	0.8382	0.0329
0.65	126	-0.9838	0.5127	0.0672
0.65	138	-1.2088	0.561	0.0798
0.65	150	-0.2263	0.7363	0.033
0.65	198	1.6608	0.8374	0.1059
0.65	210	0.6486	0.7113	0.0497
0.65	222	0.7567	0.6969	0.0552
0.65	234	1.3306	0.9012	0.0867
0.65	270	-0.2925	0.6345	0.0349
0.65	282	-0.0698	0.5967	0.0303
0.75	66	-1.1716	0.6237	0.0777
0.75	78	-0.2325	0.7882	0.0332
0.75	198	-0.217	0.6208	0.0328
0.75	210	0.3459	0.6179	0.0367
0.75	222	0.5517	0.7042	0.0452
0.75	234	0.6232	0.7061	0.0485
0.75	246	-0.3528	0.738	0.037
0.75	270	-0.6268	0.485	0.0487
0.75	282	-0.1702	0.5489	0.0318
0.85	114	1.5465	0.6752	0.0992
0.85	126	-0.1256	0.6808	0.031
0.85	198	0.4801	0.719	0.042
0.85	210	0.0452	0.5694	0.0301
0.85	222	-1.0187	0.5416	0.0691
0.85	234	0.536	0.7383	0.0444
0.85	258	0.4345	0.7432	0.0401
0.85	270	-0.2635	0.6121	0.0341
0.85	282	0.9176	0.7419	0.0636