Measurement E151M19

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:	0.9194
Q²:	0.205 GeV²
W:	1205.0 GeV
E_beam:	1.0539 GeV
ε:	0.7681

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_UL	uncertainty	syst. uncert.
0.35	294.0	0.0144	0.5335	0.03
0.45	282.0	0.2634	0.4552	0.0424
0.45	294.0	-0.0114	0.4766	0.03
0.55	270.0	0.1391	0.4651	0.0339
0.55	282.0	-0.2645	0.4051	0.0425
0.65	270.0	0.5756	0.4587	0.072
0.65	282.0	0.8915	0.5357	0.1058
0.85	126.0	0.4493	0.5816	0.0593

CLAS Physics Database