Measurement E151M2022

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:	0.5631
Q²:	0.348 GeV²
W:	1385.0 GeV
E_beam:	2.2596 GeV
ε:	0.8824

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.85	102.0	0.9816	0.826	0.0705
0.85	258.0	1.3989	0.7029	0.0958
0.85	282.0	0.1254	0.7609	0.0311
0.85	294.0	-0.2736	0.6928	0.0349
0.95	294.0	-0.0451	1.1365	0.0301

CLAS Physics Database