Measurement E151M1902

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:	0.1377
Q²:	0.205 GeV²
W:	1625.0 GeV
E_beam:	1.9889 GeV
ε:	0.7368

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.75	246.0	-0.9888	0.885	0.067
0.85	234.0	-0.9387	0.7689	0.0643

CLAS Physics Database