Measurement E151M2356

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:	0.0489
Q²:	0.0707 GeV²
W:	1715.0 GeV
E_beam:	2.999 GeV
ε:	0.8911

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.75	210.0	0.0838	0.9465	0.0306
0.85	102.0	-0.1727	0.8879	0.0325
0.85	114.0	0.7423	0.8192	0.0616
0.85	126.0	0.5316	0.9133	0.0488
0.85	186.0	-1.1	0.9537	0.0852
0.85	222.0	-0.1745	0.9304	0.0326

CLAS Physics Database