Measurement E151M1923

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:	0.0449
Q²:	0.0707 GeV²
W:	1685.0 GeV
E_beam:	1.9889 GeV
ε:	0.7423

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.55	222.0	-1.3934	0.6459	0.0896
0.65	138.0	-1.0886	0.6107	0.0725
0.65	222.0	-0.046	0.7268	0.0301
0.75	198.0	-1.1354	0.6005	0.0751
0.75	210.0	-0.8686	0.6173	0.0606
0.75	222.0	-0.9995	0.6264	0.0676
0.75	234.0	0.3486	0.6501	0.0367
0.75	270.0	0.5129	0.6104	0.0432
0.75	282.0	0.1691	0.5932	0.0317
0.85	114.0	-0.8444	0.6927	0.0593
0.85	126.0	-0.7013	0.6566	0.052
0.85	222.0	-0.4024	0.632	0.0387

CLAS Physics Database