Measurement E151M2146

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:	0.067
Q²:	0.101 GeV²
W:	1685.0 GeV
E_beam:	2.2596 GeV
ε:	0.7993

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.85	102.0	2.5964	2.3819	0.2405
0.85	126.0	-2.8621	2.4785	0.2647
0.85	210.0	0.637	2.2643	0.0658
0.65	294.0	-0.6662	0.6184	0.0527
0.85	114.0	-2.1172	0.7219	0.141
0.85	234.0	-1.2426	0.7175	0.0862

CLAS Physics Database