Measurement E151M1189

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:	0.0694
Q²:	0.1715 GeV²
W:	1835.0 GeV
E_beam:	2.999 GeV
ε:	0.812

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_UL	uncertainty
0.75	222.0	-0.6306	0.8012
0.85	90.0	-0.0422	0.8361
0.85	102.0	-0.6096	0.8047
0.85	114.0	1.317	1.0482
0.85	174.0	0.9341	0.9431
0.85	186.0	-0.2257	0.7167
0.85	198.0	-0.0177	0.7829
0.85	210.0	2.2807	0.9807
0.85	222.0	-0.3684	0.8662
0.85	234.0	-0.5335	0.7946

CLAS Physics Database