Measurement E151M1181

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:	0.1299
Q²:	0.348 GeV²
W:	1805.0 GeV
E_beam:	2.999 GeV
ε:	0.7874

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_UL	uncertainty
0.85	90.0	0.9517	0.9895
0.85	210.0	0.224	0.9633
0.95	198.0	0.6022	0.9522
0.95	222.0	0.2575	0.8913
0.95	246.0	0.2866	0.8618

CLAS Physics Database