Measurement E151M1897

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:	0.0691
Q²:	0.0844 GeV²
W:	1625.0 GeV
E_beam:	1.9889 GeV
ε:	0.7903

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.45	270.0	-0.5059	0.9009	0.0429
0.55	126.0	1.4473	0.8265	0.0927
0.55	270.0	-0.6952	0.7883	0.0517
0.55	282.0	-0.4303	0.8285	0.0397
0.65	126.0	0.3826	0.7774	0.0379
0.65	138.0	-0.8148	0.9286	0.0578
0.65	222.0	0.4106	0.818	0.039
0.65	294.0	0.7249	0.8551	0.0532
0.75	138.0	0.1459	0.8913	0.0313
0.75	198.0	-1.4958	0.6745	0.0955
0.75	210.0	-0.7622	0.7827	0.0551
0.75	222.0	-0.9548	0.698	0.0652
0.75	270.0	-0.1998	0.8144	0.0324
0.75	282.0	-0.6444	0.7757	0.0492
0.75	294.0	-0.7888	0.8661	0.0564
0.85	102.0	-0.3727	0.9194	0.0376
0.85	114.0	0.044	0.7895	0.0301
0.85	198.0	1.045	0.8491	0.0701
0.85	210.0	0.1264	0.8661	0.031
0.85	222.0	-1.4044	0.7028	0.0902
0.85	234.0	-1.4974	0.7135	0.0956
0.95	222.0	1.5417	0.65	0.0981

CLAS Physics Database