Measurement E151M892

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:	0.1704
Q²:	0.205 GeV²
W:	1595.0 GeV
E_beam:	2.2596 GeV
ε:	0.8242

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_UL	uncertainty	syst. uncert.
0.85	78.0	-0.7537	0.6956	0.0578
0.85	90.0	-0.2746	0.6828	0.035
0.85	222.0	0.991	0.8668	0.0963
0.85	246.0	0.1363	0.7334	0.0325
0.85	258.0	-0.6151	0.7827	0.0503

CLAS Physics Database