Measurement E151M1689

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:	0.7589
Q²:	0.101 GeV²
W:	1205.0 GeV
E_beam:	1.9889 GeV
ε:	0.9656

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.95	114.0	0.6667	0.5381	0.0503
0.95	126.0	-0.2849	0.5673	0.0346
0.95	138.0	0.1793	0.5342	0.0319

CLAS Physics Database