Measurement E151M2381

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:	0.2096
Q²:	0.5925 GeV²
W:	1745.0 GeV
E_beam:	2.999 GeV
ε:	0.7635

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.85	66.0	-1.6694	0.9966	0.1247
0.85	246.0	0.6811	0.927	0.0578
0.95	270.0	-0.7606	0.9321	0.0628

CLAS Physics Database