Measurement E151M2421

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:	0.0538
Q²:	0.1435 GeV²
W:	1865.0 GeV
E_beam:	2.999 GeV
ε:	0.8008

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.75	210.0	-0.3244	1.1306	0.0381
0.85	102.0	1.133	0.9944	0.0875
0.85	114.0	0.4096	0.9971	0.0422
0.85	126.0	1.7004	1.0622	0.1269
0.85	174.0	-1.1043	1.0681	0.0855
0.85	198.0	-0.0165	0.9764	0.03
0.85	210.0	0.0094	0.978	0.03
0.85	222.0	0.4144	1.006	0.0425

CLAS Physics Database