Measurement E151M1932

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:	0.0172
Q²:	0.0291 GeV²
W:	1715.0 GeV
E_beam:	1.9889 GeV
ε:	0.732

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.55	258.0	-0.4069	0.8363	0.0388
0.65	198.0	-1.6548	0.7836	0.1047
0.75	258.0	-0.995	0.8482	0.0673
0.75	270.0	-0.6166	0.7673	0.0479
0.75	282.0	-0.5726	0.7036	0.0459
0.85	138.0	-0.341	0.8307	0.0364
0.85	210.0	-1.0666	0.7835	0.0713

CLAS Physics Database