Measurement E151M2368

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:	0.2313
Q²:	0.5925 GeV²
W:	1715.0 GeV
E_beam:	2.999 GeV
ε:	0.7804

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.85	66.0	0.9286	0.9009	0.0737
0.85	186.0	0.9696	1.0431	0.0764
0.85	210.0	0.4264	0.9707	0.0431
0.85	246.0	-0.6471	0.8868	0.0557
0.95	234.0	0.9258	0.9717	0.0735
0.95	246.0	-0.9966	0.7764	0.0782
0.95	270.0	-0.8048	0.7538	0.0656
0.95	294.0	0.7148	0.7894	0.0599

CLAS Physics Database