Measurement E151M1178

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:	0.0889
Q²:	0.205 GeV²
W:	1805.0 GeV
E_beam:	2.999 GeV
ε:	0.8211

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_UL	uncertainty
0.85	78.0	-0.3942	0.8788
0.85	90.0	-0.3104	0.7895
0.85	102.0	1.8943	0.8789
0.85	114.0	-0.9909	0.7556
0.85	186.0	-0.2411	0.8391
0.85	198.0	-0.7708	0.7634
0.85	210.0	-0.117	0.7122
0.85	222.0	0.9981	0.856
0.85	234.0	0.6463	0.9989
0.95	186.0	0.8724	1.0427
0.95	210.0	-1.4198	0.5719
0.95	222.0	0.9234	0.9233
0.95	234.0	0.7617	0.9229

CLAS Physics Database