Measurement E151M163

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_UL
ε_L:	0.008
Q²:	0.005 GeV²
W:	1445.0 GeV
E_beam:	1.0539 GeV
ε:	0.6698

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_UL	uncertainty	syst. uncert.
0.45	54.0	-0.2191	0.7282	0.039
0.55	42.0	0.4668	0.8569	0.061
0.55	54.0	-0.2037	0.7992	0.0379
0.55	222.0	0.1741	0.7778	0.0359
0.65	234.0	0.8532	0.7488	0.1016
0.75	234.0	0.0716	0.6568	0.0311
0.85	222.0	0.034	0.7027	0.0302
0.85	234.0	1.6134	0.6506	0.186
0.85	246.0	-1.4099	0.5266	0.1632

CLAS Physics Database