Measurement E151M1708

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:	0.2087
Q²:	0.0348 GeV²
W:	1265.0 GeV
E_beam:	1.9889 GeV
ε:	0.9697

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.55	90.0	0.8738	0.6119	0.0609
0.65	258.0	1.2866	0.6707	0.0835
0.75	246.0	-1.1063	0.4916	0.0734
0.75	258.0	0.6514	0.5771	0.0496
0.75	270.0	0.4516	0.6616	0.0406
0.85	126.0	-0.2318	0.6809	0.0331
0.85	138.0	0.6178	0.637	0.048
0.85	162.0	-0.9416	0.6265	0.0645
0.85	246.0	-1.1083	0.5522	0.0736

CLAS Physics Database