Measurement E151M1940

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:	0.0613
Q²:	0.1205 GeV²
W:	1715.0 GeV
E_beam:	1.9889 GeV
ε:	0.6868

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.75	234.0	-1.2891	0.7914	0.0837
0.75	282.0	-2.2366	2.2366	0.1388
0.85	222.0	-0.6994	0.8432	0.0519

CLAS Physics Database