Measurement E151M530

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_UL
ε_L:	0.1006
Q²:	0.0291 GeV²
W:	1355.0 GeV
E_beam:	1.9889 GeV
ε:	0.9502

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_UL	uncertainty	syst. uncert.
0.75	234.0	-0.3187	0.6112	0.0358
0.75	246.0	-0.0176	0.5608	0.03
0.85	246.0	0.2032	0.6613	0.0325

CLAS Physics Database