Measurement E151M1093

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:	0.295
Q²:	0.4155 GeV²
W:	1595.0 GeV
E_beam:	2.999 GeV
ε:	0.8714

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_UL	uncertainty	syst. uncert.
0.55	90.0	-0.1533	0.8773	0.032
0.55	102.0	-1.6078	0.6213	0.1213
0.65	90.0	-1.4145	0.5727	0.1076
0.65	102.0	-1.4071	0.6053	0.1071
0.65	114.0	-0.5545	0.8481	0.0504
0.75	66.0	0.9106	0.8589	0.073
0.75	78.0	-0.562	0.7976	0.0509
0.75	102.0	0.041	0.7127	0.0301
0.75	114.0	0.7977	1.0014	0.0656
0.75	210.0	2.6445	0.9609	0.1956
0.75	222.0	0.8691	0.887	0.0703
0.75	234.0	-0.2303	0.6682	0.0344
0.75	246.0	1.5898	0.9228	0.12
0.85	54.0	-0.4317	0.6949	0.0435
0.85	66.0	-0.4315	0.7353	0.0435
0.85	78.0	-0.1498	0.8458	0.0319
0.85	114.0	-2.0671	0.4438	0.154
0.85	210.0	-0.0993	0.7065	0.0309
0.85	222.0	1.0899	0.9156	0.0851
0.85	234.0	0.3546	0.7532	0.0396
0.85	246.0	1.2654	0.6783	0.0972
0.85	258.0	-0.4306	0.5518	0.0435
0.85	270.0	0.6675	0.7517	0.0573
0.85	282.0	0.2093	0.803	0.0337
0.95	186.0	-1.0228	0.698	0.0805
0.95	210.0	-0.0785	0.8003	0.0305
0.95	222.0	1.2325	0.9177	0.0949
0.95	234.0	0.1564	0.6424	0.0321
0.95	246.0	0.0978	0.6595	0.0308
0.95	258.0	-0.9065	0.596	0.0727
0.95	270.0	-0.2643	0.5347	0.0357
0.95	282.0	1.1192	0.7266	0.0871
0.95	294.0	0.9451	0.6535	0.0753
0.95	306.0	-0.0946	0.602	0.0308
0.95	318.0	-0.1335	0.5864	0.0315

CLAS Physics Database