Measurement E151M543

Experiment:	EG4
Year:	2016	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).
Spokesperson:	Xiaochao Zheng
Reaction:	ep → π⁺n
Polarization:	beam (longitudinal), target (longitudinal)
Quantity:	A_UL
ε_L:	0.5774
Q²:	0.2915 GeV²
W:	1355.0 GeV
E_beam:	1.9889 GeV
ε:	0.8748

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_UL	uncertainty	syst. uncert.
0.15	66.0	0.2591	0.7663	0.0339
0.35	66.0	-0.7209	0.6288	0.0533
0.65	90.0	0.3546	0.6471	0.037
0.65	102.0	0.4938	0.7491	0.0426
0.65	258.0	0.0183	0.5699	0.03
0.75	90.0	-0.3261	0.6371	0.036
0.75	102.0	0.0349	0.6245	0.0301
0.75	126.0	0.1602	0.7135	0.0316
0.75	246.0	-0.456	0.6136	0.041
0.75	258.0	-1.0359	0.4971	0.0701
0.75	270.0	0.3013	0.6665	0.0352
0.75	282.0	-0.6064	0.4901	0.0477
0.85	90.0	0.1325	0.5824	0.0311
0.85	102.0	0.7554	0.6035	0.0551
0.85	114.0	-0.3581	0.5041	0.0371
0.85	222.0	0.1686	0.6359	0.0317
0.85	234.0	-0.0168	0.5689	0.03
0.85	246.0	-0.8711	0.4421	0.0611
0.85	258.0	-0.039	0.5211	0.0301
0.85	270.0	-0.0833	0.5218	0.0304
0.85	282.0	-0.4295	0.5055	0.0399
0.85	294.0	-0.4069	0.4064	0.039
0.95	90.0	-0.6075	0.4905	0.0478
0.95	102.0	-0.4452	0.5429	0.0405
0.95	258.0	-0.4687	0.5358	0.0415
0.95	270.0	0.5576	0.6044	0.0454
0.95	282.0	0.3576	0.5335	0.0371
0.95	294.0	-0.6229	0.4528	0.0485
0.95	306.0	0.6002	0.5391	0.0474

CLAS Physics Database