Measurement E151M1828

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:	0.3596
Q²:	0.348 GeV²
W:	1475.0 GeV
E_beam:	1.9889 GeV
ε:	0.7924

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.65	126.0	0.9244	0.8962	0.0635
0.65	258.0	0.6103	0.7818	0.0476
0.75	102.0	1.2	0.8275	0.0787
0.75	246.0	-1.4941	0.6441	0.0954
0.85	66.0	0.4203	0.835	0.0394
0.85	270.0	1.2097	0.6981	0.0792
0.95	258.0	0.7338	0.6797	0.0536

CLAS Physics Database