Measurement E151M591

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:	0.4107
Q²:	0.348 GeV²
W:	1445.0 GeV
E_beam:	1.9889 GeV
ε:	0.8109

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_UL	uncertainty
0.65	90.0	0.3479	0.727
0.65	102.0	-0.0463	0.6986
0.75	90.0	-0.3641	0.707
0.75	102.0	-0.2724	0.6986
0.75	246.0	-0.4678	0.6675
0.75	258.0	1.3207	0.7014
0.75	270.0	-0.5067	0.6241
0.85	246.0	0.0215	0.641
0.85	270.0	0.8221	0.7882
0.85	282.0	0.1503	0.6202
0.85	294.0	1.254	0.6887
0.95	282.0	-0.1315	0.5772
0.95	294.0	-0.2067	0.6217

CLAS Physics Database