Measurement E151M2145

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:	0.0574
Q²:	0.0844 GeV²
W:	1685.0 GeV
E_beam:	2.2596 GeV
ε:	0.8052

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.65	138.0	-0.5935	2.1526	0.0622
0.75	222.0	-2.7255	1.9862	0.2523
0.75	282.0	-3.0967	1.5785	0.2862
0.85	114.0	-4.1848	2.4242	0.3858
0.85	210.0	2.7964	2.0738	0.2587
0.65	282.0	0.4746	0.6592	0.043
0.75	270.0	-1.4804	0.6201	0.1009
0.75	282.0	0.1879	0.6581	0.0324
0.85	114.0	-0.1969	0.8233	0.0326
0.85	234.0	-0.7142	0.8673	0.0553

CLAS Physics Database