Measurement E151M1083

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:	0.3973
Q²:	0.7075 GeV²
W:	1565.0 GeV
E_beam:	2.999 GeV
ε:	0.8262

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_UL	uncertainty	syst. uncert.
0.85	258.0	0.6119	0.8974	0.0539
0.85	270.0	-0.0078	0.7517	0.03
0.85	294.0	-0.5444	0.7383	0.0498

CLAS Physics Database