Measurement E151M682

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:	0.0192
Q²:	0.0245 GeV²
W:	1655.0 GeV
E_beam:	1.9889 GeV
ε:	0.7912

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_UL	uncertainty	syst. uncert.
0.65	210.0	-0.6231	0.6137	0.0485
0.75	66.0	0.7399	0.7591	0.0543
0.75	270.0	1.068	0.586	0.0719
0.85	126.0	-0.5088	0.6579	0.0432
0.85	210.0	-0.0596	0.681	0.0302

CLAS Physics Database