Measurement E151M1959

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_LL
ε_L:	0.9513
Q²:	0.205 GeV²
W:	1235.0 GeV
E_beam:	2.2596 GeV
ε:	0.9516

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.75	282.0	-1.1898	2.2325	0.1134
0.85	90.0	0.5185	3.0913	0.0563
0.55	282.0	-0.0726	0.4592	0.0304
0.65	270.0	-0.5163	0.4745	0.045
0.65	294.0	0.8082	0.4911	0.0605
0.75	282.0	0.5009	0.4323	0.0443
0.75	294.0	-0.542	0.473	0.0463
0.85	90.0	0.0076	0.5682	0.03
0.85	102.0	-0.413	0.556	0.0403
0.85	282.0	-0.0679	0.5191	0.0303
0.95	102.0	-1.0785	0.794	0.0763
0.95	114.0	0.4667	0.8651	0.0427
0.95	126.0	0.3361	0.8246	0.0371

CLAS Physics Database