Measurement E151M1924

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:	0.0524
Q²:	0.0844 GeV²
W:	1685.0 GeV
E_beam:	1.9889 GeV
ε:	0.7359

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.45	282.0	-1.0768	0.6692	0.0718
0.65	126.0	1.0313	0.695	0.0693
0.65	198.0	0.4008	0.7462	0.0386
0.65	282.0	-1.5719	0.5839	0.0999
0.65	294.0	-1.1098	0.6207	0.0736
0.75	198.0	0.1018	0.635	0.0306
0.75	210.0	-0.7152	0.6196	0.0527
0.75	222.0	-0.8624	0.553	0.0603
0.75	282.0	-0.291	0.566	0.0348
0.85	114.0	1.3812	0.5383	0.0889
0.85	234.0	-0.3205	0.7224	0.0357

CLAS Physics Database