Measurement E151M2168

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:	1.4496
Q²:	0.496 GeV²
W:	1205.0 GeV
E_beam:	2.999 GeV
ε:	0.9459

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.45	282.0	-0.2291	0.7599	0.0343
0.55	282.0	0.1697	0.6873	0.0324
0.55	294.0	0.7784	0.7075	0.0639
0.75	90.0	0.7406	0.7543	0.0615
0.75	270.0	-1.7924	0.642	0.1334
0.75	294.0	-0.2622	0.7445	0.0355
0.85	66.0	-0.2435	0.7925	0.0348
0.85	78.0	1.0371	0.6984	0.081

CLAS Physics Database