Measurement E151M515

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:	0.8569
Q²:	0.4155 GeV²
W:	1295.0 GeV
E_beam:	1.9889 GeV
ε:	0.8605

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_UL	uncertainty
0.65	78.0	1.4464	0.6357
0.75	102.0	-0.7103	0.5444
0.75	294.0	-0.5526	0.5231
0.85	102.0	0.0683	0.6472

CLAS Physics Database