Measurement E151M39

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:	0.7393
Q²:	0.205 GeV²
W:	1235.0 GeV
E_beam:	1.0539 GeV
ε:	0.7395

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_UL	uncertainty	syst. uncert.
0.45	282.0	-0.2365	0.5727	0.0403
0.55	270.0	-0.7485	0.3919	0.0903
0.55	282.0	-0.2831	0.5389	0.044
0.65	294.0	-0.3986	0.5096	0.0544
0.75	270.0	-0.2984	0.4753	0.0453
0.85	126.0	-0.2191	0.56	0.039
0.85	150.0	-0.0001	0.564	0.03
0.95	186.0	-0.0416	0.4606	0.0304

CLAS Physics Database