Measurement E151M2140

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:	0.0254
Q²:	0.0348 GeV²
W:	1685.0 GeV
E_beam:	2.2596 GeV
ε:	0.8226

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.75	210.0	1.8755	2.0984	0.175
0.75	270.0	-1.9602	1.9602	0.131
0.85	210.0	-1.0194	0.8293	0.0728

CLAS Physics Database