Measurement E151M1933

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:	0.0203
Q²:	0.0348 GeV²
W:	1715.0 GeV
E_beam:	1.9889 GeV
ε:	0.7292

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.55	210.0	-0.8893	0.8139	0.0617
0.65	210.0	-2.1737	0.6312	0.1351
0.75	198.0	-1.5283	0.7343	0.0973
0.75	210.0	-0.8273	0.7798	0.0584
0.75	258.0	-0.3775	0.8345	0.0377
0.75	270.0	-0.7016	0.741	0.052
0.75	282.0	0.4455	0.788	0.0404
0.85	126.0	-0.1949	0.7509	0.0322
0.85	210.0	-0.6719	0.7458	0.0506

CLAS Physics Database