Measurement E151M1159

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:	0.2096
Q²:	0.5925 GeV²
W:	1745.0 GeV
E_beam:	2.999 GeV
ε:	0.7635

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_UL	uncertainty	syst. uncert.
0.85	66.0	1.6804	1.025	0.1264
0.85	246.0	2.8258	2.8258	0.2087
0.95	270.0	-0.3931	0.7517	0.0415

CLAS Physics Database