Measurement E151M1935

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:	0.0283
Q²:	0.0496 GeV²
W:	1715.0 GeV
E_beam:	1.9889 GeV
ε:	0.722

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.35	78.0	0.0777	0.8373	0.0304
0.35	282.0	-0.6684	0.8613	0.0504
0.65	198.0	-0.9811	0.799	0.0666
0.65	282.0	-1.3084	0.7694	0.0848
0.75	66.0	-1.4944	0.7018	0.0954
0.75	210.0	0.2443	0.7198	0.0335
0.75	270.0	-0.1247	0.6644	0.0309
0.75	282.0	-1.5718	0.6984	0.0999
0.85	114.0	-0.0017	0.7051	0.03
0.85	126.0	0.4203	0.8561	0.0394
0.85	198.0	0.2191	0.7798	0.0328
0.85	222.0	-1.044	0.68	0.07

CLAS Physics Database