Measurement E151M880

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:	0.1931
Q²:	0.205 GeV²
W:	1565.0 GeV
E_beam:	2.2596 GeV
ε:	0.8416

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_UL	uncertainty	syst. uncert.
0.75	126.0	-1.5753	0.5805	0.1076
0.75	222.0	0.5689	0.5884	0.0527
0.85	78.0	-0.4271	0.5166	0.0461
0.85	90.0	-1.9236	0.7256	0.1801
0.85	222.0	0.3025	0.9043	0.036
0.85	234.0	0.8812	0.6567	0.0763
0.95	246.0	1.1493	1.3819	0.0812
0.95	258.0	0.3094	1.2843	0.0362
0.95	282.0	-2.9529	1.5934	0.2742

CLAS Physics Database