Measurement E151M1214

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:	0.0273
Q²:	0.0844 GeV²
W:	1925.0 GeV
E_beam:	2.999 GeV
ε:	0.7765

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_UL	uncertainty
0.75	186.0	-0.7386	0.8463
0.85	102.0	-0.1637	0.8737
0.85	114.0	-0.1757	0.8497
0.85	126.0	0.2322	0.9471
0.85	210.0	-0.9124	0.7662

CLAS Physics Database