Measurement E151M1209

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:	0.0563
Q²:	0.1715 GeV²
W:	1895.0 GeV
E_beam:	2.999 GeV
ε:	0.7745

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_UL	uncertainty	syst. uncert.
0.85	102.0	2.1787	0.9798	0.162
0.85	186.0	0.2541	0.8132	0.0353
0.85	198.0	1.0018	0.9833	0.0791
0.85	210.0	0.0072	0.9492	0.03

CLAS Physics Database