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	syst. uncert.
0.35	78.0	0.0069	0.8504	0.03
0.45	270.0	-0.9402	0.7815	0.0644
0.45	282.0	0.1593	0.7323	0.0315
0.55	222.0	-1.2193	0.7898	0.0797
0.65	126.0	-0.4793	0.8041	0.0418
0.65	138.0	-0.1542	0.8384	0.0314
0.65	210.0	1.3165	0.7527	0.0852
0.65	222.0	-0.5916	0.762	0.0467
0.65	282.0	0.0254	0.6525	0.03
0.75	66.0	0.122	0.8507	0.0309
0.75	114.0	1.1031	0.783	0.0733
0.75	198.0	0.597	0.8752	0.047
0.75	210.0	-0.3678	0.65	0.0374
0.75	222.0	-0.8612	0.7581	0.0602
0.75	270.0	0.0815	0.762	0.0304
0.75	282.0	-0.0232	0.6817	0.03
0.75	294.0	-0.7008	0.7787	0.052
0.85	114.0	-1.1599	0.6535	0.0764
0.85	126.0	-1.02	0.6219	0.0687
0.85	198.0	-1.5759	0.6753	0.1001
0.85	210.0	-0.9018	0.6576	0.0623
0.85	222.0	-0.298	0.8215	0.035
0.85	234.0	0.2736	0.6617	0.0343

CLAS Physics Database