Measurement E151M1925

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:	0.061
Q²:	0.101 GeV²
W:	1685.0 GeV
E_beam:	1.9889 GeV
ε:	0.728

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.65	126.0	-0.5851	0.684	0.0464
0.75	222.0	-1.3826	0.6164	0.089
0.75	234.0	-0.9849	0.5845	0.0668
0.75	282.0	-0.2617	0.5752	0.0339
0.85	102.0	-0.6196	0.7869	0.0481
0.85	114.0	0.1996	0.6967	0.0323
0.85	198.0	-0.5804	0.7025	0.0462
0.85	210.0	-0.7928	0.5488	0.0566
0.85	222.0	0.9082	0.6143	0.0627

CLAS Physics Database