Measurement E151M1869

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:	0.1596
Q²:	0.1715 GeV²
W:	1565.0 GeV
E_beam:	1.9889 GeV
ε:	0.8004

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.65	102.0	0.4507	0.8575	0.0406
0.65	126.0	0.8924	0.9569	0.0618
0.65	138.0	0.4826	0.9843	0.0419
0.75	102.0	0.3091	0.8738	0.0354
0.75	114.0	-1.3837	0.798	0.0891
0.75	126.0	1.6141	0.7988	0.1023
0.75	138.0	-1.5248	0.7985	0.0971
0.75	210.0	0.4124	0.8952	0.039
0.75	222.0	-1.0385	0.934	0.0697
0.75	234.0	1.9919	0.7588	0.1244
0.75	246.0	-0.6693	0.7776	0.0504
0.75	294.0	0.1321	0.8534	0.031
0.85	78.0	-1.1215	0.8837	0.0743
0.85	90.0	0.9507	0.8739	0.065
0.85	102.0	-0.31	0.9834	0.0354
0.85	222.0	0.4874	0.8346	0.0421
0.85	234.0	1.0403	0.6535	0.0698
0.85	246.0	-0.4614	0.8602	0.041
0.95	90.0	-0.6702	0.8334	0.0505
0.95	222.0	0.7045	0.78	0.0522
0.95	234.0	-0.7954	0.7602	0.0568
0.95	246.0	-0.2167	0.6911	0.0327
0.95	258.0	-0.2458	0.8044	0.0335
0.95	270.0	1.2528	0.647	0.0816

CLAS Physics Database