Measurement E151M1204

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:	0.0258
Q²:	0.0707 GeV²
W:	1895.0 GeV
E_beam:	2.999 GeV
ε:	0.7999

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_UL	uncertainty	syst. uncert.
0.75	114.0	-0.5688	0.8093	0.0513
0.75	210.0	-2.5879	0.441	0.1915
0.75	282.0	0.0941	0.7621	0.0308
0.85	126.0	0.9677	0.9972	0.0768
0.85	186.0	-1.4052	0.6474	0.107
0.85	198.0	-0.6363	0.7037	0.0553
0.85	270.0	-0.2245	0.7897	0.0342

CLAS Physics Database