Measurement E151M2426

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:	0.0258
Q²:	0.0707 GeV²
W:	1895.0 GeV
E_beam:	2.999 GeV
ε:	0.7999

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.75	114.0	0.9994	0.9979	0.0784
0.75	210.0	-0.5897	0.9763	0.0522
0.75	282.0	-1.2046	0.8378	0.0924
0.85	126.0	-1.3879	1.0249	0.105
0.85	186.0	-1.7135	0.8608	0.1278
0.85	198.0	-0.834	0.8728	0.0675
0.85	270.0	-1.2793	0.833	0.0975

CLAS Physics Database