Measurement E151M690

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:	0.0701
Q²:	0.101 GeV²
W:	1655.0 GeV
E_beam:	1.9889 GeV
ε:	0.7568

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_UL	uncertainty	syst. uncert.
0.55	222.0	0.9867	0.7775	0.0674
0.65	126.0	-0.0469	0.6763	0.0301
0.65	138.0	-0.9447	0.5902	0.0651
0.65	222.0	0.2085	0.6809	0.0326
0.65	294.0	0.3369	0.6411	0.0364
0.75	66.0	-0.3937	0.6626	0.0385
0.75	138.0	-1.3874	0.5391	0.09
0.75	198.0	-0.4209	0.6639	0.0395
0.75	210.0	-0.2339	0.6998	0.0332
0.75	222.0	0.1813	0.6762	0.032
0.75	234.0	-0.0063	0.5705	0.03
0.75	282.0	1.2439	0.6781	0.0818
0.85	102.0	1.6305	0.7133	0.1041
0.85	234.0	-0.136	0.5528	0.0311
0.95	234.0	-0.4987	0.5214	0.0428

CLAS Physics Database