Measurement E151M814

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:	0.4942
Q²:	0.348 GeV²
W:	1415.0 GeV
E_beam:	2.2596 GeV
ε:	0.8711

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_UL	uncertainty	syst. uncert.
0.85	270.0	-0.5746	0.964	0.0609
0.75	270.0	-0.1923	0.651	0.0325
0.85	258.0	-0.5153	0.6843	0.0452

CLAS Physics Database