Measurement E151M1645

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:	0.013
Q²:	0.0143 GeV²
W:	1565.0 GeV
E_beam:	1.3383 GeV
ε:	0.6446

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.55	30.0	-0.6058	1.1634	0.0463
0.55	222.0	-0.9143	1.0227	0.061
0.55	234.0	-1.1114	1.1284	0.0712
0.65	150.0	-0.1654	1.3005	0.0315
0.65	222.0	0.2918	1.0509	0.0345
0.75	222.0	-1.0373	0.9441	0.0674
0.75	234.0	-0.7894	1.2116	0.0548
0.85	138.0	1.0934	1.0574	0.0703
0.85	222.0	-0.553	0.999	0.044
0.85	234.0	-0.5182	0.9848	0.0425
0.45	30.0	0.6223	0.9444	0.0479
0.55	42.0	0.6565	0.9394	0.0495
0.55	210.0	-0.1549	0.7889	0.0314
0.55	234.0	-0.1689	0.9791	0.0317
0.65	138.0	-0.1726	0.9145	0.0317
0.75	234.0	0.1303	0.879	0.031

CLAS Physics Database