Measurement E151M645

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:	0.1221
Q²:	0.1205 GeV²
W:	1565.0 GeV
E_beam:	1.9889 GeV
ε:	0.821

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_UL	uncertainty	syst. uncert.
0.35	66.0	-0.3756	0.783	0.0378
0.35	270.0	0.0925	0.8175	0.0305
0.45	282.0	1.3562	0.7813	0.0882
0.55	138.0	0.1427	0.8115	0.0312
0.55	222.0	-0.6388	0.6564	0.0493
0.55	234.0	0.2776	0.8079	0.0345
0.65	114.0	-0.7895	0.6558	0.0568
0.65	126.0	0.0696	0.7519	0.0303
0.65	138.0	-1.3012	0.6434	0.0851
0.65	210.0	0.965	0.8949	0.0662
0.65	222.0	1.6316	0.8481	0.1042
0.65	234.0	1.4776	0.8922	0.0952
0.75	114.0	-1.6123	0.44	0.1031
0.75	126.0	-1.0394	0.5542	0.0703
0.75	138.0	0.4767	0.8231	0.0418
0.75	198.0	0.896	0.9061	0.0625
0.75	210.0	-0.0475	0.5965	0.0301
0.75	222.0	0.3348	0.6954	0.0363
0.75	234.0	0.3872	0.6129	0.0382
0.75	246.0	0.7306	0.7019	0.0538
0.75	282.0	0.6003	0.8247	0.0474
0.85	90.0	-0.1216	0.6639	0.0309
0.85	102.0	-0.3264	0.7444	0.036
0.85	138.0	0.4793	0.7523	0.0419
0.85	210.0	0.913	0.7223	0.0634
0.85	222.0	0.5892	0.592	0.0469
0.85	234.0	0.9303	0.6465	0.0643
0.85	246.0	0.109	0.5811	0.0307
0.95	102.0	-0.7858	0.5979	0.0567
0.95	210.0	0.666	0.7452	0.0506
0.95	234.0	-0.1001	0.635	0.0306
0.95	246.0	0.7687	0.6524	0.0558

CLAS Physics Database