Measurement E151M561

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:	0.0721
Q²:	0.0291 GeV²
W:	1415.0 GeV
E_beam:	1.9889 GeV
ε:	0.9309

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_UL	uncertainty	syst. uncert.
0.45	78.0	-0.2627	0.7304	0.034
0.65	78.0	0.2485	0.7482	0.0336
0.65	222.0	-0.4004	0.6852	0.0387
0.65	234.0	-0.7923	0.5287	0.057
0.65	246.0	-0.1135	0.642	0.0308
0.75	114.0	0.5405	0.7934	0.0446
0.75	126.0	0.982	0.7181	0.0671
0.75	234.0	0.1353	0.7297	0.0311
0.85	138.0	-0.7927	0.6191	0.057
0.85	234.0	1.4032	0.6381	0.0909
0.85	246.0	1.3403	0.6477	0.0873

CLAS Physics Database