Measurement E151M1157

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:	0.177
Q²:	0.4155 GeV²
W:	1745.0 GeV
E_beam:	2.999 GeV
ε:	0.8052

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_UL	uncertainty
0.85	78.0	-0.0934	0.8727
0.85	90.0	-0.3688	0.8171
0.85	210.0	-0.5519	0.7947
0.85	234.0	-0.2805	0.8078
0.85	246.0	0.7171	0.9036
0.95	186.0	0.5118	0.9568
0.95	198.0	0.532	0.7727
0.95	210.0	-0.3923	0.791
0.95	222.0	1.1811	0.9438
0.95	234.0	0.6298	0.9023
0.95	246.0	0.0011	0.796
0.95	258.0	0.1428	0.7768
0.95	282.0	0.1624	0.8287

CLAS Physics Database