Measurement E151M709

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:	0.0145
Q²:	0.0245 GeV²
W:	1715.0 GeV
E_beam:	1.9889 GeV
ε:	0.7343

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_UL	uncertainty	syst. uncert.
0.55	210.0	0.0935	0.7714	0.0305
0.75	66.0	-0.8281	0.6464	0.0589
0.85	126.0	-0.5263	0.6887	0.044

CLAS Physics Database