Measurement E151M1917

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_LL
ε_L:	0.0167
Q²:	0.0245 GeV²
W:	1685.0 GeV
E_beam:	1.9889 GeV
ε:	0.764

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.65	222.0	-1.152	0.609	0.076
0.75	198.0	-1.4327	0.5611	0.0919
0.75	210.0	-1.1325	0.6445	0.0749
0.75	270.0	-1.2593	0.5495	0.082
0.85	138.0	-0.5394	0.7255	0.0444

CLAS Physics Database