Measurement E151M1190

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:	0.0801
Q²:	0.205 GeV²
W:	1835.0 GeV
E_beam:	2.999 GeV
ε:	0.804

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_UL	uncertainty
0.85	102.0	1.3406	0.9525
0.85	210.0	0.6966	0.9559
0.85	222.0	0.5414	0.8222
0.95	198.0	-0.0223	0.9067

CLAS Physics Database