Measurement E151M1910

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:	0.0516
Q²:	0.0707 GeV²
W:	1655.0 GeV
E_beam:	1.9889 GeV
ε:	0.7705

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.35	78.0	0.0069	0.8504
0.45	270.0	-0.9402	0.7815
0.45	282.0	0.1593	0.7323
0.55	222.0	-1.2193	0.7898
0.65	126.0	-0.4793	0.8041
0.65	138.0	-0.1542	0.8384
0.65	210.0	1.3165	0.7527
0.65	222.0	-0.5916	0.762
0.65	282.0	0.0254	0.6525
0.75	66.0	0.122	0.8507
0.75	114.0	1.1031	0.783
0.75	198.0	0.597	0.8752
0.75	210.0	-0.3678	0.65
0.75	222.0	-0.8612	0.7581
0.75	270.0	0.0815	0.762
0.75	282.0	-0.0232	0.6817
0.75	294.0	-0.7008	0.7787
0.85	114.0	-1.1599	0.6535
0.85	126.0	-1.02	0.6219
0.85	198.0	-1.5759	0.6753
0.85	210.0	-0.9018	0.6576
0.85	222.0	-0.298	0.8215
0.85	234.0	0.2736	0.6617

CLAS Physics Database