Measurement E151M2115

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:	0.1919
Q²:	0.2445 GeV²
W:	1595.0 GeV
E_beam:	2.2596 GeV
ε:	0.8112

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.85	78.0	-0.8961	0.8774	0.0656
0.85	258.0	1.3119	0.8792	0.0905
0.65	126.0	2.3056	2.3056	0.214

CLAS Physics Database