Measurement E151M1158

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:	0.1941
Q²:	0.496 GeV²
W:	1745.0 GeV
E_beam:	2.999 GeV
ε:	0.7866

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_UL	uncertainty	syst. uncert.
0.85	78.0	0.0699	0.8814	0.0304
0.85	210.0	2.0517	1.1447	0.1529
0.95	222.0	-1.1998	0.5809	0.0927
0.95	234.0	-1.1329	0.6176	0.0881
0.95	246.0	1.3927	0.9879	0.1061
0.95	258.0	0.0295	0.7459	0.0301
0.95	270.0	1.1173	0.9116	0.087

CLAS Physics Database