Measurement E151M1644

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:	0.011
Q²:	0.0121 GeV²
W:	1565.0 GeV
E_beam:	1.3383 GeV
ε:	0.6467

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.55	210.0	-0.4021	0.9142	0.0385
0.65	222.0	-1.7609	0.8984	0.1097
0.75	222.0	-1.7603	0.7314	0.1097
0.85	210.0	-1.0176	0.8745	0.068
0.45	42.0	-1.5492	1.1825	0.0949
0.65	222.0	-1.1561	0.8616	0.0736
0.75	210.0	-1.5762	1.0387	0.0964
0.75	222.0	1.4708	0.9233	0.0906
0.85	222.0	-0.7788	1.1794	0.0543

CLAS Physics Database