Measurement E151M251

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:	0.777
Q²:	0.2915 GeV²
W:	1265.0 GeV
E_beam:	1.3383 GeV
ε:	0.7741

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_UL	uncertainty	syst. uncert.
0.75	114.0	-0.3966	0.5619	0.0388
0.85	102.0	-0.7469	0.5386	0.0551
0.55	270.0	0.5255	0.987	0.0436
0.85	102.0	0.2845	0.8888	0.0345
0.85	114.0	0.4986	1.0846	0.0424
0.85	150.0	0.1143	0.8769	0.0308
0.85	270.0	0.7956	0.9005	0.0565
0.85	294.0	-0.4903	0.6288	0.0421
0.95	138.0	0.6962	0.9107	0.0516

CLAS Physics Database