Measurement E151M650

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:	0.2225
Q²:	0.2915 GeV²
W:	1565.0 GeV
E_beam:	1.9889 GeV
ε:	0.75

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_UL	uncertainty	syst. uncert.
0.85	234.0	-0.8817	0.6315	0.0617
0.85	246.0	-0.8309	0.6627	0.059
0.95	222.0	0.8116	0.7953	0.058
0.95	258.0	0.1734	0.5862	0.0318

CLAS Physics Database