Measurement E151M1937

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:	0.039
Q²:	0.0707 GeV²
W:	1715.0 GeV
E_beam:	1.9889 GeV
ε:	0.7116

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.75	222.0	-0.5564	0.8367
0.75	282.0	-0.0749	0.7594
0.85	126.0	-0.1045	0.8852
0.85	210.0	-0.3871	0.8655
0.85	222.0	-0.5071	0.8463

CLAS Physics Database