Measurement E151M249

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:	0.6992
Q²:	0.205 GeV²
W:	1265.0 GeV
E_beam:	1.3383 GeV
ε:	0.8283

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_UL	uncertainty	syst. uncert.
0.85	114.0	0.2323	0.5541	0.0333
0.65	282.0	0.6541	0.9275	0.0495
0.85	270.0	-0.4519	0.6123	0.0405

CLAS Physics Database