Measurement E151M1474

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:	0.06
Q²:	0.0121 GeV²
W:	1295.0 GeV
E_beam:	1.3383 GeV
ε:	0.9245

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.65	246.0	-0.22	0.5567	0.034
0.75	234.0	1.501	0.7124	0.0948
0.65	258.0	-0.9829	0.6961	0.0646
0.75	246.0	-1.2639	0.7472	0.0794
0.75	258.0	-0.3741	0.8853	0.0371
0.85	246.0	0.7024	0.886	0.0507

CLAS Physics Database