Measurement E151M717

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:	0.053
Q²:	0.101 GeV²
W:	1715.0 GeV
E_beam:	1.9889 GeV
ε:	0.6966

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_UL	uncertainty	syst. uncert.
0.75	222.0	0.094	0.7581	0.0305
0.85	210.0	-0.0589	0.6617	0.0302

CLAS Physics Database