Measurement E151M668

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:	0.0221
Q²:	0.0245 GeV²
W:	1625.0 GeV
E_beam:	1.9889 GeV
ε:	0.8159

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_UL	uncertainty	syst. uncert.
0.65	222.0	0.2359	0.8051	0.0333
0.75	198.0	0.2101	0.8103	0.0326
0.75	210.0	0.2373	0.8063	0.0333
0.85	126.0	-0.4372	0.7271	0.0402
0.85	138.0	-1.0057	0.6306	0.0684
0.85	222.0	1.0185	0.691	0.0691

CLAS Physics Database