Measurement E151M1649

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:	0.0254
Q²:	0.0291 GeV²
W:	1565.0 GeV
E_beam:	1.3383 GeV
ε:	0.6307

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.65	210.0	1.4996	0.8916	0.0922
0.65	222.0	-2.3326	0.5403	0.1389
0.65	234.0	0.4406	0.9845	0.0394
0.65	246.0	0.4973	1.0372	0.0417
0.75	210.0	-2.536	2.536	0.1505
0.75	222.0	-0.8481	1.0367	0.0577
0.75	234.0	-1.0853	0.981	0.0699
0.85	222.0	0.8371	1.1215	0.0572
0.85	234.0	1.4477	0.8341	0.0894
0.85	246.0	-0.336	0.9957	0.0358
0.35	42.0	1.0225	0.906	0.0682
0.55	234.0	-0.122	0.9536	0.0309
0.75	210.0	0.4921	0.9382	0.0421
0.75	222.0	-1.0293	0.9096	0.0686
0.75	234.0	-0.6039	0.8943	0.047
0.85	138.0	-0.2607	0.9672	0.0338
0.85	210.0	0.685	0.8809	0.0508
0.85	222.0	-0.5089	0.8657	0.0428
0.85	234.0	0.6841	0.7639	0.0508
0.85	246.0	1.3357	0.8446	0.0855

CLAS Physics Database