Measurement E151M2132

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:	0.0473
Q²:	0.0593 GeV²
W:	1655.0 GeV
E_beam:	2.2596 GeV
ε:	0.8345

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.45	270.0	0.1802	0.9576	0.0343
0.45	282.0	0.044	0.5916	0.0303
0.65	78.0	-1.2855	0.6721	0.0888
0.65	126.0	0.6769	0.7071	0.0533
0.65	210.0	0.2916	0.7422	0.0355
0.75	66.0	-0.2535	0.7059	0.0342
0.75	210.0	0.6343	0.8691	0.051
0.75	222.0	-0.3061	0.8142	0.036
0.75	234.0	-0.841	0.8745	0.0624
0.75	270.0	0.419	0.6031	0.0405
0.75	282.0	0.0689	0.6896	0.0303
0.75	294.0	1.0202	0.7191	0.0728
0.85	102.0	-2.074	0.6872	0.1382
0.85	114.0	1.1922	0.6468	0.0832
0.85	198.0	-0.9419	0.9393	0.0682
0.85	210.0	1.9251	0.7253	0.1288
0.85	222.0	-1.2323	0.6813	0.0856
0.55	126.0	-0.6167	1.0673	0.0641
0.55	270.0	0.5829	0.9225	0.0614
0.65	198.0	0.023	1.1581	0.0301
0.65	282.0	0.0624	0.9786	0.0305
0.75	198.0	0.1013	1.1773	0.0314
0.75	210.0	-1.0462	1.0611	0.1007
0.75	222.0	1.6686	1.012	0.1563
0.75	234.0	-0.4215	1.0584	0.049
0.75	270.0	0.1854	0.8232	0.0345
0.75	282.0	-2.2853	0.7913	0.2122
0.85	102.0	0.8676	1.3727	0.0852
0.85	114.0	1.1189	1.1561	0.1071
0.85	126.0	0.0644	1.2941	0.0306
0.85	198.0	-0.3363	1.2109	0.0431
0.85	210.0	0.0872	1.2802	0.0311
0.85	222.0	-0.898	1.3838	0.0878
0.85	234.0	1.2535	1.2666	0.119

CLAS Physics Database