Measurement E151M1945

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:	0.0208
Q²:	0.0415 GeV²
W:	1745.0 GeV
E_beam:	1.9889 GeV
ε:	0.6931

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.75	78.0	-1.5862	0.7743	0.1007
0.75	210.0	-2.1001	0.6732	0.1307
0.75	258.0	1.1323	0.8671	0.0749
0.75	270.0	0.0195	0.8382	0.03
0.75	282.0	-0.8765	0.8086	0.061

CLAS Physics Database